Cohort Profile Update: The Swiss Eosinophilic Esophagitis Cohort Study (SEECS).

Autor: El-Khoury JW; Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland., Safroneeva E; Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland., Saner C; Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland., Rossel JB; Department of Clinical Research, University of Bern, Bern, Switzerland., Trelle S; Department of Clinical Research, University of Bern, Bern, Switzerland., Zwahlen M; Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland., Biedermann L; Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland., Kreienbuehl A; Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland., Greuter T; Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland.; Division of Gastroenterology and Hepatology, Spital Wetzikon, Wetzikon, Switzerland., Schreiner P; Division of Gastroenterology and Hepatology, University Hospital AKH Vienna, Vienna, Austria., Netzer P; GastroZentrum Netzer AG, Lindenhofspital, Bern, Switzerland., Franke A; Division of Gastroenterology and Hepatology, Kantonsspital St. Gallen, St. Gallen, Switzerland., Brand S; Division of Gastroenterology and Hepatology, Kantonsspital St. Gallen, St. Gallen, Switzerland., Hasler C; Division of Gastroenterology and Hepatology, Kantonsspital Lucerne, Lucerne, Switzerland., Aepli P; Division of Gastroenterology and Hepatology, Kantonsspital Lucerne, Lucerne, Switzerland., Burri E; Division of Gastroenterology and Hepatology, University Hospital Basel, Liestal, Switzerland., Weber A; Division of Pathology, University Hospital Zurich, Zurich, Switzerland., Sempoux C; Institute of Pathology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland., Biral R; Pathologie Länggasse, Bern, Switzerland., Jochum W; Institute of Pathology, Kantonsspital St. Gallen, St. Gallen, Switzerland., Diebold J; Division of Pathology, Kantonsspital Luzern, Luzern, Switzerland., Willi N; Division of Pathology, Kantonsspital Liestal, Liestal, Switzerland., Straumann A; Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland., Schoepfer AM; Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland.

Publikováno v: Inflammatory intestinal diseases [Inflamm Intest Dis] 2024 Jul 17; Vol. 9 (1), pp. 165-173. Date of Electronic Publication: 2024 Jul 17 (Print Publication: 2024).

Thiazides for kidney stone recurrence prevention.

Autor: Bargagli M; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital., Trelle S; CTU Bern, Department of Clinical Research, University of Bern, Bern., Bonny O; Service of Nephrology, Fribourg State Hospital, University of Fribourg, Fribourg, Switzerland., Fuster DG; Department of Nephrology and Hypertension, Inselspital, Bern University Hospital.

Publikováno v: Current opinion in nephrology and hypertension [Curr Opin Nephrol Hypertens] 2024 Jul 01; Vol. 33 (4), pp. 427-432. Date of Electronic Publication: 2024 Apr 12.

The autism puzzle: Diffuse but not pervasive neuroanatomical abnormalities in children with ASD

Autor: Sussman, D., Leung, R.C., Vogan, V.M., Lee, W., Trelle, S., Lin, S., Cassel, D.B., Chakravarty, M.M., Lerch, J.P., Anagnostou, E., Taylor, M.J.

Publikováno v: In NeuroImage: Clinical 2015 8:170-179

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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.