A national survey of acute cerebrovascular disease in Israel: burden, management, outcome and adherence to guidelines

Autor: Tanne D, Goldbourt U, Koton S, Ehud Grossman, Koren-Morag N, Ms, Green, Nm, Bornstein, Natioonal Acute Stroke Israeli Survey Group

Publikováno v: Europe PubMed Central

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::4b7bce402ee6a0cd0b8e4edd53c6f407
http://europepmc.org/abstract/med/16450742

Sex Differences in Frequency, Severity, and Distribution of Cerebral Microbleeds.

Autor: Fandler-Höfler S; Department of Neurology, Medical University of Graz, Graz, Austria.; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom., Eppinger S; Department of Neurology, Medical University of Graz, Graz, Austria.; Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria., Ambler G; Department of Statistical Science, University College London, London, United Kingdom., Nash P; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom., Kneihsl M; Department of Neurology, Medical University of Graz, Graz, Austria.; Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria., Lee KJ; Department of Neurology, Korea University Guro Hospital, Seoul, South Korea., Lim JS; Department of Neurology, Hallym Neurological Institute, Hallym University College of Medicine, Hallym University Sacred Heart Hospital, Anyang, South Korea., Shiozawa M; Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Centre, Suita, Japan., Koga M; Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Centre, Suita, Japan., Li L; Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom., Lovelock C; Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom., Chabriat H; Assistance Publique - Hôpitaux de Paris, Lariboisière Hospital, Translational Neurovascular Centre, Paris, France.; Federation Hospitalo-Universitaire NeuroVasc, Université de Paris, Paris, France.; INSERM U1141, Paris, France., Hennerici M; Department of Neurology, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany., Wong YK; Division of Neurology, Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China., Mak HKF; Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong Special Administrative Region, China., Prats-Sanchez L; Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute, Barcelona, Spain., Martínez-Domeño A; Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute, Barcelona, Spain., Inamura S; Department of Neurosurgery, Kushiro City General Hospital, Kushiro, Japan., Yoshifuji K; Department of Neurosurgery, Kushiro City General Hospital, Kushiro, Japan., Arsava EM; A. A. Martinos Center for Biomedical Imaging, Department of Neurology, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts., Horstmann S; Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany., Purrucker J; Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany., Lam BYK; Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Centre, Lui Che Woo Institute of Innovative Medicine, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Wong A; Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Centre, Lui Che Woo Institute of Innovative Medicine, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Kim YD; Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea., Song TJ; Department of Neurology, Seoul Hospital, Ewha Womans University College of Medicine, Seoul, South Korea., Lemmens R; Experimental Neurology, Department of Neurosciences, Katholieke Universiteit Leuven, Leuven, Belgium.; Department of Neurology, University Hospitals Leuven, Leuven, Belgium., Uysal E; Department of Radiology, Saglık Bilimleri University, Sisli Etfal Education and Research Hospital, Istanbul, Turkey., Tanriverdi Z; Department of Neurology, İzmir Katip Çelebi University Atatürk Education and Research Hospital, İzmir, Turkey., Bornstein NM; Brain Division, Shaare-Zedek Medical Center, Jerusalem, Israel.; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel., Ben Assayag E; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.; Department of Stroke & Neurology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel., Hallevi H; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.; Department of Stroke & Neurology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel., Molad J; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.; Department of Stroke & Neurology, Tel-Aviv Sourasky Medical Center, Tel-Aviv, Israel., Nishihara M; Department of Radiology, Saga University Faculty of Medicine, Saga, Japan., Tanaka J; Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan., Coutts SB; Calgary Stroke Program, Department of Clinical Neurosciences, Radiology and Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Calgary, Canada., Polymeris A; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland., Wagner B; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland., Seiffge DJ; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland.; Department of Neurology, University Hospital Inselspital Bern, University of Bern, Bern, Switzerland., Lyrer P; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland., Kappelle LJ; Department of Neurology and Neurosurgery, Utrecht University, Utrecht, the Netherlands., Salman RA; Centre for Clinical Brain Sciences, School of Clinical Sciences, University of Edinburgh, Edinburgh, United Kingdom., Hernandez MV; Centre for Clinical Brain Sciences, School of Clinical Sciences, University of Edinburgh, Edinburgh, United Kingdom., Jäger HR; Lysholm Department of Neuroradiology and the Neuroradiological Academic Unit, Department of Brain Repair and Rehabilitation, University College London Institute of Neurology and the National Hospital for Neurology and Neurosurgery, London, United Kingdom., Lip GYH; Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart and Chest Hospital, Liverpool, United Kingdom.; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark., Fischer U; Department of Neurology, University Hospital Inselspital Bern, University of Bern, Bern, Switzerland., El-Koussy M; Department of Diagnostic and Interventional Neuroradiology, University Hospital Inselspital Bern, University of Bern, Bern, Switzerland., Mas JL; GHU-Paris Psychiatrie et Neurosciences, Service de Neurologie et Unité Neurovasculaire, Hôpital Sainte Anne, Paris, France.; Université de Paris Cité, INSERM U1266, Institute of Psychiatry and Neuroscience of Paris, FHU Neurovasc, Paris, France., Legrand L; GHU-Paris Psychiatrie et Neurosciences, Service de Neuroradiologie, Hôpital Sainte Anne, Paris, France.; Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris, INSERM U1266, Paris, France., Karayiannis C; Peninsula Clinical School, Peninsula Health, Monash University, Melbourne, Australia., Phan T; Stroke and Ageing Research Group, School of Clinical Sciences at Monash Health, Monash University, Melbourne, Australia., Gunkel S; Department of Neurology, University Hospital of Würzburg, Würzburg, Germany., Christ N; Department of Neurology, University Hospital of Würzburg, Würzburg, Germany., Abrigo J; Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Chu W; Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Leung T; Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Chappell F; Centre for Clinical Brain Sciences, Edinburgh Imaging, University of Edinburgh, Edinburgh, United Kingdom.; UK Dementia Research Institute, University of Edinburgh, Edinburgh, United Kingdom., Makin S; Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, United Kingdom., Hayden D; Department of Medical Gerontology, Trinity College Dublin, Dublin, Ireland.; The Neurovascular Research Unit and Health Research Board, Stroke Clinical Trials Network Ireland, University College Dublin, Dublin, Ireland., Williams DJ; Department of Geriatric and Stroke Medicine, Royal College of Surgeons in Ireland University of Medicine and Health Sciences Dublin, Dublin, Ireland.; Department of Geriatric and Stroke Medicine, Beaumont Hospital Dublin, Dublin, Ireland., Mess WH; Department of Clinical Neurophysiology, Maastricht University Medical Centre, Maastricht, the Netherlands., Kooi ME; Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, the Netherlands.; Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands., Barbato C; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.; Comprehensive Stroke Service, University College London Hospitals NHS Trust, London, United Kingdom., Browning S; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.; Comprehensive Stroke Service, University College London Hospitals NHS Trust, London, United Kingdom., Tuladhar AM; Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Donders Centre for Medical Neuroscience, Radboud University Medical Center, Nijmegen, the Netherlands., Maaijwee N; Department of Neurology and Neurorehabilitation, Neurocenter, Lucerne State Hospital, Lucerne, Switzerland., Guevarra AC; Department of Neurology, National Neuroscience Institute, Singapore, Singapore., Mendyk AM; Degenerative and vascular cognitive disorders, University of Lille, INSERM, Centre Hospitalier Universitaire de Lille, Lille, France., Delmaire C; Degenerative and vascular cognitive disorders, University of Lille, INSERM, Centre Hospitalier Universitaire de Lille, Lille, France.; Department of Radiology, Hospital Foundation Adolphe De Rothschild, Paris, France., Köhler S; Department of Psychiatry and Neuropsychology, Mental Health and Neuroscience Research Institute, Maastricht University, Maastricht, the Netherlands., van Oostenbrugge R; Department of Neurology, Cardiovascular Research Institute Maastricht School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, the Netherlands., Zhou Y; Department of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China., Xu C; Department of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China., Hilal S; Memory, Aging and Cognition Centre, Yong Loo Lin School of Medicine and Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore., Robert C; Memory, Aging and Cognition Centre, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore., Chen C; Memory, Aging and Cognition Centre, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore., Lou M; Department of Neurology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China., Staals J; Department of Neurology, Cardiovascular Research Institute Maastricht School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, the Netherlands., Bordet R; Degenerative and vascular cognitive disorders, University of Lille, INSERM, Centre Hospitalier Universitaire de Lille, Lille, France., Kandiah N; Department of Neurology, National Neuroscience Institute, Singapore, Singapore., de Leeuw FE; Department of Neurology, Research Institute for Medical Innovation, Radboud University Medical Center, Nijmegen, the Netherlands., Simister R; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.; Comprehensive Stroke Service, University College London Hospitals NHS Trust, London, United Kingdom., Bos D; Department of Epidemiology and Department of Radiology and Nuclear Medicine, ErasmusMC, Rotterdam, the Netherlands., Kelly PJ; The Neurovascular Research Unit and Health Research Board, Stroke Clinical Trials Network Ireland, University College Dublin, Dublin, Ireland., Wardlaw J; Centre for Clinical Brain Sciences, Edinburgh Imaging, University of Edinburgh, Edinburgh, United Kingdom.; UK Dementia Research Institute, University of Edinburgh, Edinburgh, United Kingdom., Soo Y; Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Fluri F; Department of Neurology, University Hospital of Würzburg, Würzburg, Germany., Srikanth V; Peninsula Clinical School, Peninsula Health, Monash University, Melbourne, Australia., Calvet D; GHU-Paris Psychiatrie et Neurosciences, Service de Neurologie et Unité Neurovasculaire, Hôpital Sainte Anne, Paris, France., Jung S; Department of Neurology, University Hospital Inselspital Bern, University of Bern, Bern, Switzerland., Kwa VIH; Department of Neurology, Onze Lieve Vrouwe Gasthuis, Amsterdam, the Netherlands., Engelter ST; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland.; Neurology and Neurorehabilitation, Department of Geriatric Medicine Felix Platter, University of Basel, Basel, Switzerland., Peters N; Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland.; Neurology and Neurorehabilitation, Department of Geriatric Medicine Felix Platter, University of Basel, Basel, Switzerland., Smith EE; Calgary Stroke Program, Department of Clinical Neurosciences, Radiology and Community Health Sciences, Hotchkiss Brain Institute, University of Calgary, Calgary, Canada., Hara H; Department of Radiology, Saga University Faculty of Medicine, Saga, Japan., Yakushiji Y; Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan.; Department of Neurology, Kansai Medical University, Osaka, Japan., Orken DN; Memorial Sisli Hospital, Department of Neurology, Istanbul, Turkey., Thijs V; Stroke Division, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Heidelberg, Australia.; Department of Neurology, Austin Health, Heidelberg, Australia., Heo JH; Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea., Mok V; Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Centre, Lui Che Woo Institute of Innovative Medicine, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China., Veltkamp R; Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany.; Department of Brain Sciences, Imperial College London, London, United Kingdom., Ay H; A. A. Martinos Center for Biomedical Imaging, Department of Neurology, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.; Takeda, Cambridge, Massachusetts., Imaizumi T; Department of Neurosurgery, Kushiro City General Hospital, Kushiro, Japan., Lau KK; Division of Neurology, Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China., Jouvent E; Assistance Publique - Hôpitaux de Paris, Lariboisière Hospital, Translational Neurovascular Centre, Paris, France., Rothwell PM; Wolfson Centre for Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom., Toyoda K; Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Centre, Suita, Japan., Bae HJ; Department of Neurology, Korea University Guro Hospital, Seoul, South Korea., Marti-Fabregas J; Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute, Barcelona, Spain., Wilson D; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom.; New Zealand Brain Research Institute, Christchurch, New Zealand., Best J; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom., Fazekas F; Department of Neurology, Medical University of Graz, Graz, Austria., Enzinger C; Department of Neurology, Medical University of Graz, Graz, Austria., Werring DJ; Stroke Research Centre, UCL Queen Square Institute of Neurology, London, United Kingdom., Gattringer T; Department of Neurology, Medical University of Graz, Graz, Austria.; Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria.

Publikováno v: JAMA network open [JAMA Netw Open] 2024 Oct 01; Vol. 7 (10), pp. e2439571. Date of Electronic Publication: 2024 Oct 01.

Early Versus Late Initiation of Direct Oral Anticoagulants After Ischemic Stroke in People With Atrial Fibrillation and Hemorrhagic Transformation: Prespecified Subanalysis of the Randomized-controlled ELAN Trial.

Autor: Rohner R; University Institute of Diagnostic and Interventional Neuroradiology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Kneihsl M; Department of Neurology, Medical University of Graz, Graz, Austria; Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria; Department of Neurology, University and University Hospital Basel, Basel, Switzerland., Goeldlin MB; Department of Neurology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Hakim A; University Institute of Diagnostic and Interventional Neuroradiology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Branca M; Department of Clinical Research, University of Bern, Bern, Switzerland., Abend S; Department of Neurology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Valenzuela Pinilla W; Support Center for Advanced Neuroimaging, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Fenzl S; University Institute of Diagnostic and Interventional Neuroradiology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Rezny-Kasprzak B; University Institute of Diagnostic and Interventional Neuroradiology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Strbian D; Department of Neurology, Helsinki University Hospital, and University of Helsinki, Finland., Trelle S; Department of Clinical Research, University of Bern, Bern, Switzerland., Paciaroni M; Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy., Thomalla G; Department of Neurology, University Medical Center Hamburg-Eppendorf, Germany., Michel P; Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne, Switzerland., Nedeltchev K; Department of Neurology, Cantonal Hospital Aarau, Aarau, Switzerland., Gattringer T; Department of Neurology, Medical University of Graz, Graz, Austria; Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz, Austria., Sandset EC; Department of Neurology, Oslo University Hospital, Oslo, Norway., Bonati L; Department of Neurology, University and University Hospital Basel, Basel, Switzerland; Research Department, Reha Rheinfelden, Rheinfelden, Switzerland., Aguiar de Sousa D; Stroke Center, Lisbon Central University Hospital and Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal., Sylaja PN; Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India., Ntaios G; Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece., Koga M; Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan., Gdovinova Z; Department of Neurology, P.J. Safarik University, Faculty of Medicine and University Hospital L. Pasteur Kosice, Kosice, Slovakia., Lemmens R; KU Leuven, Department of Neurosciences, Experimental Neurology; University Hospitals Leuven, Department of Neurology, Leuven, Belgium., Bornstein NM; Department of Neurology, Shaare-Zedek Medical Center, Jerusalem, Israel., Kelly P; Stroke Clinical Trials Network Ireland, University College Dublin/Department of Neurology, Mater University Hospital, Dublin, Ireland., Katan M; Department of Neurology, University and University Hospital Basel, Basel, Switzerland., Horvath T; Department of Neurology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland., Dawson J; School of Cardiovascular and Metabolic Health, Queen Elizabeth University Hospital, University of Glasgow, Glasgow, United Kingdom., Fischer U; Department of Neurology, University and University Hospital Basel, Basel, Switzerland; Department of Neurology, Inselspital Bern University Hospital and University of Bern, Bern, Switzerland.

Publikováno v: Circulation [Circulation] 2024 May 16. Date of Electronic Publication: 2024 May 16.

Pre-hospital stroke monitoring past, present, and future: a perspective.

Autor: Ben Pazi H; Avertto Medical Ltd., Aderet, Israel., Jahashan S; Neurosurgery, Galilee Medical Center, Nahariya, Israel., Har Nof S; Neurosurgery, Rabin Medical Center, Petach Tikva, Israel., Zibman S; Avertto Medical Ltd., Aderet, Israel., Yanai-Kohelet O; Avertto Medical Ltd., Aderet, Israel., Prigan L; Avertto Medical Ltd., Aderet, Israel., Intrator N; Neurosteer Inc., New York, NY, United States., Bornstein NM; Stroke Unit, Neurology, Shaare Zedek Medical Center, Jerusalem, Israel.; Tel Aviv Medical School, Tel Aviv University, Tel Aviv, Israel., Ribo M; Stroke Unit, Neurology, Barcelona, Spain.

Publikováno v: Frontiers in neurology [Front Neurol] 2024 Mar 22; Vol. 15, pp. 1341170. Date of Electronic Publication: 2024 Mar 22 (Print Publication: 2024).

Early versus Later Anticoagulation for Stroke with Atrial Fibrillation.

Autor: Fischer U; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Koga M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Strbian D; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Branca M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Abend S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Trelle S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Paciaroni M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Thomalla G; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Michel P; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Nedeltchev K; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Bonati LH; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Ntaios G; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Gattringer T; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Sandset EC; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Kelly P; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Lemmens R; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Sylaja PN; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Aguiar de Sousa D; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Bornstein NM; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Gdovinova Z; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Yoshimoto T; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Tiainen M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Thomas H; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Krishnan M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Shim GC; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Gumbinger C; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Vehoff J; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Zhang L; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Matsuzono K; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Kristoffersen E; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Desfontaines P; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Vanacker P; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Alonso A; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Yakushiji Y; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Kulyk C; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Hemelsoet D; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Poli S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Paiva Nunes A; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Caracciolo N; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Slade P; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Demeestere J; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Salerno A; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Kneihsl M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Kahles T; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Giudici D; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Tanaka K; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Räty S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Hidalgo R; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Werring DJ; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Göldlin M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Arnold M; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Ferrari C; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Beyeler S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Fung C; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Weder BJ; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Tatlisumak T; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Fenzl S; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Rezny-Kasprzak B; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Hakim A; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Salanti G; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Bassetti C; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Gralla J; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Seiffge DJ; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Horvath T; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.)., Dawson J; From the Department of Neurology, University Hospital Basel, University of Basel, Basel (U.F., T.K.), the Department of Neurology (U.F., S.A., K.N., M.G., M.A., C. Ferrari, S.B., C.B., D.J.S., T.H.), the Support Center for Advanced Neuroimaging, Institute of Diagnostic and Interventional Neuroradiology (B.J.W.), and the Institute for Diagnostic and Interventional Neuroradiology (S.F., B.R.-K., A.H., J.G.), University Hospital Bern, and CTU Bern (M.B., S.T.), Institute of Social and Preventive Medicine (G.S.), University of Bern, Bern, the Department of Neurology, University Hospital Lausanne, University of Lausanne, Lausanne (P.M., A.S.), the Department of Neurology, Cantonal Hospital Aarau, Aarau (K.N., T.K.), the Research Department, Reha Rheinfelden, Rheinfelden (L.H.B.), and the Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen (J.V.) - all in Switzerland; the Departments of Cerebrovascular Medicine (M. Koga, K.T.) and Neurology (T.Y.), National Cerebral and Cardiovascular Center, Osaka, the Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi (K.M.), and the Department of Neurology, Kansai Medical University, Hirakata (Y.Y.) - all in Japan; the Department of Neurology, Helsinki University Hospital, and University of Helsinki, Helsinki (D.S., M.T., S.R.); Internal, Vascular, and Emergency Medicine, Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia (M.P., D.G.), and the Department of Human Neurosciences, University La Sapienza, Rome (N.C.) - both in Italy; the Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg (G.T.), the Department of Neurology, Heidelberg University Hospital (C.G.), and the Department of Neurology, Medical Faculty Mannheim, University of Heidelberg (A.A.), Heidelberg, the Department of Neurology and Stroke and the Hertie Institute for Clinical Brain Research, Tübingen University, Tübingen (S.P.), and the Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg (C. Fung) - all in Germany; the Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece (G.N.); the Department of Neurology, and the Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University of Graz, Graz (T.G., M. Kneihsl), and the Department of Neurology 2, Kepler University Hospital, Johannes Kepler University, Linz (C.K.) - both in Austria; the Department of Neurology, Oslo University Hospital (E.-C.S.), the Department of General Practice, University of Oslo (E.K.), and the Norwegian Air Ambulance Foundation (E.-C.S.), Oslo, and the Department of Neurology, Akershus University Hospital, Lørenskog (E.K.) - all in Norway; the Department of Neurology, Mater Misericordiae University Hospital, Dublin (P.K.); KU Leuven, Department of Neurosciences, Experimental Neurology, and the Department of Neurology, University Hospitals Leuven, Leuven (R.L., J. Demeestere), the Department of Neurology, Comprehensive Stroke Unit, CHC MontLégia Hospital, Liège (P.D.), the Department of Neurology, Algemeen Ziekenhuis Groeninge Kortrijk, Kortrijk (P.V.), the Neurovascular Center and Stroke Unit Antwerp, Antwerp University Hospital, and the Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp (P.V.), and the Department of Neurology, Ghent University Hospital, Ghent (D.H.) - all in Belgium; Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, India (P.N.S.); the Stroke Center, Lisbon Central University Hospital (D.A.S., A.P.N.) and Faculty of Medicine, University of Lisbon (D.A.S.) - both in Lisbon, Portugal; the Department of Neurology, Shaare Zedek Medical Center, Jerusalem (N.M.B.); the Department of Neurology, Faculty of Medicine, Pavol Jozef Safarik University, and University Hospital Louis Pasteur - both in Košice, Slovakia (Z.G.); Glan Clwyd Hospital, Betsi Cadwaladr University Health Board, Rhyl (H.T., R.H.), the Stroke Unit, Morriston Hospital, Swansea Bay University Health Board, Swansea (M. Krishnan, P.S.), the Stroke Department, University Hospital of North Durham, Durham (G.C.S.), the Department of Neurology, St. George's University Hospital (L.Z.), and the Stroke Research Centre, Department of Brain Repair and Rehabilitation, University College London Queen Square Institute of Neurology, University College London (D.J.W.), London, and the School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow (J. Dawson) - all in the United Kingdom; and the Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, and the Department of Neurology, Sahlgrenska University Hospital - both in Gothenburg, Sweden (T.T.).

Publikováno v: The New England journal of medicine [N Engl J Med] 2023 Jun 29; Vol. 388 (26), pp. 2411-2421. Date of Electronic Publication: 2023 May 24.