Intraosseous or Intravenous Vascular Access for Out-of-Hospital Cardiac Arrest.

Autor: Vallentin MF; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Granfeldt A; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Klitgaard TL; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Mikkelsen S; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Folke F; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Christensen HC; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Povlsen AL; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Petersen AH; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Winther S; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Frilund LW; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Meilandt C; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Holmberg MJ; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Winther KB; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Bach A; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Dissing TH; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Terkelsen CJ; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Christensen S; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Kirkegaard Rasmussen L; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Mortensen LR; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Loldrup ML; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Elkmann T; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Nielsen AG; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Runge C; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Klæstrup E; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Holm JH; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Bak M; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Nielsen LR; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Pedersen M; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Kjærgaard-Andersen G; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Hansen PM; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Brøchner AC; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Christensen EF; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Nielsen FM; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Nissen CG; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Bjørn JW; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Burholt P; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Obling LER; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Holle SLD; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Russell L; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Alstrøm H; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Hestad S; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Fogtmann TH; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Buciek JUH; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Jakobsen K; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Krag M; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Sandgaard M; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Sindberg B; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark., Andersen LW; From Prehospital Emergency Medical Services, Central Denmark Region (M.F.V., A.L.P., A.H.P., S.W., L.W.F., C.M., K.B.W., A.B., T.H.D., L.K.R., L.R.M., M.L.L., T.E., A.G.N., C.R., L.W.A.), the Department of Clinical Medicine, Aarhus University (M.F.V., A.G., C.J.T., S.C., L.W.A.), and the Departments of Anesthesiology and Intensive Care (A.G., M.J.H., T.H.D., S.C., C.G.N., B.S., L.W.A.), Cardiology (C.J.T.), and Radiology (E.K.), Aarhus University Hospital, Aarhus, the Department of Anesthesiology and Intensive Care, Aalborg University Hospital (T.L.K., F.M.N.), the Center for Prehospital and Emergency Research, Department of Clinical Medicine, Aalborg University and Aalborg University Hospital (E.F.C.), and Emergency Medical Services, North Denmark Region (P.B.), Aalborg, the Prehospital Research Unit (S.M., P.M.H.) and Emergency Medical Services (J.H.H., M.B., L.-G.R.N., M.P., G.K.-A., P.M.H.), Region of Southern Denmark, the Department of Anesthesiology and Intensive Care, Odense University Hospital (J.H.H., M.B.), and the Department of Regional Health Research, University of Southern Denmark (A.C.B.), Odense, the Departments of Cardiology (F.F.) and of Anesthesiology and Intensive Care (L.R.), Copenhagen University Hospital, Gentofte Copenhagen University Hospital-Emergency Medical Services, Ballerup (F.F., J.W.B., H.A., S.H., T.H.F.), the Department of Clinical Medicine, University of Copenhagen (F.F., H.C.C., L.R., M.K.), and the Department of Cardiology, the Heart Center, Copenhagen University Hospital, Rigshospitalet (L.E.R.O., S.L.D.H.), Copenhagen, the Prehospital Center, Region Zealand, Næstved (H.C.C.), the Department of Anesthesiology and Intensive Care, Gødstrup Regional Hospital, Gødstrup (L.K.R.), the Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers (L.R.M., T.E.), the Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg (A.G.N.), the Elective Surgery Center, Silkeborg Regional Hospital, Silkeborg (C.R.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Esbjerg and Grindsted, Esbjerg (L.-G.R.N.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Kolding (M.P., A.C.B.), the Department of Anesthesiology and Intensive Care, University Hospital of Southern Denmark, Aabenraa (G.K.-A.), the Department of Anesthesiology and Intensive Care, Svendborg Hospital, Svendborg (P.M.H.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital, Herlev (H.A.), the Department of Anesthesiology and Intensive Care, Copenhagen University Hospital-North Zealand, Hillerød (S.H.), the Department of Anesthesiology and Intensive Care, Zealand University Hospital, Køge (J.U.H.B.), the Department of Anesthesiology and Intensive Care, Nykøbing Falster Hospital, Nykøbing Falster (K.J.), the Department of Anesthesiology and Intensive Care, Holbæk Hospital, Holbæk (M.K.), and the Department of Anesthesiology and Intensive Care, Slagelse Hospital, Slagelse (M.S.) - all in Denmark.

Publikováno v: The New England journal of medicine [N Engl J Med] 2024 Oct 31. Date of Electronic Publication: 2024 Oct 31.

Constructing Causal Life-Course Models: Comparative Study of Data-Driven and Theory-Driven Approaches.

Autor: Petersen AH, Ekstrøm CT, Spirtes P, Osler M

Publikováno v: American journal of epidemiology [Am J Epidemiol] 2023 Nov 03; Vol. 192 (11), pp. 1917-1927.

Measurement Properties of the Dutch Multifactor Fatigue Scale in Early and Late Rehabilitation of Acquired Brain Injury in Denmark.

Autor: Dornonville de la Cour FL; Cervello, 2800 Kongens Lyngby, Denmark.; Department of Psychology, University of Southern Denmark, 5230 Odense, Denmark., Schow T; Cervello, 2800 Kongens Lyngby, Denmark., Andersen TE; Department of Psychology, University of Southern Denmark, 5230 Odense, Denmark., Petersen AH; Center for Rehabilitation of Brain Injury, 2300 Copenhagen, Denmark., Zornhagen G; Center for Communication Disorders, The Capital Region of Denmark, 2750 Ballerup, Denmark., Visser-Keizer AC; Center for Rehabilitation, University Medical Center Groningen, 9700 RB Groningen, The Netherlands., Norup A; Department of Psychology, University of Southern Denmark, 5230 Odense, Denmark.; Neurorehabilitation Research and Knowledge Centre, Rigshospitalet, 2600 Glostrup, Denmark.

Publikováno v: Journal of clinical medicine [J Clin Med] 2023 Mar 29; Vol. 12 (7). Date of Electronic Publication: 2023 Mar 29.

The repertoire of germline variants in patients with early-onset rectal cancer.

Autor: Beltrami CM; International Research Center - CIPE, A.C.Camargo Cancer Center, São Paulo, SP, 04002-010, Brazil.; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, 7100, Denmark., do Canto LM; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, 7100, Denmark., Villacis RAR; Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília - UnB, Brasília, DF, 70910-900, Brazil., Petersen AH; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, 7100, Denmark., Aagaard MM; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, 7100, Denmark., Cury SS; Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University - UNESP, Botucatu, SP, 18618-689, Brazil., Formiga MNDC; Oncogenetics Department, A.C.Camargo Cancer Center, São Paulo, SP, 04002-010, Brazil., Junior SA; Department of Pelvic Surgery, A.C.Camargo Cancer Center, São Paulo, SP, 04002-010, Brazil., Rogatto SR; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, 7100, Denmark.; Faculty of Health Sciences, Institute of Regional Health Research, University of Southern Denmark, Odense, 5000, Denmark.; The Danish Colorectal Cancer Center South, University Hospital of Southern Denmark, Vejle, 7100, Denmark.

Publikováno v: Cancer communications (London, England) [Cancer Commun (Lond)] 2022 May; Vol. 42 (5), pp. 481-485. Date of Electronic Publication: 2022 Jan 14.

Germline variants in DNA repair genes are associated with young-onset head and neck cancer.

Autor: Cury SS; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark; Department of Structural and Functional Biology, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil., Miranda PM; International Research Center, CIPE - A.C.Camargo Cancer Center, São Paulo, Brazil., Marchi FA; International Research Center, CIPE - A.C.Camargo Cancer Center, São Paulo, Brazil., Canto LMD; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark., Chulam TC; Department of Head and Neck Surgery and Otorhinolaryngology, A.C.Camargo Cancer Center, São Paulo, Brazil., Petersen AH; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark., Aagaard MM; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark., Pinto CAL; Department of Pathology, A.C.Camargo Cancer Center, São Paulo, Brazil., Kowalski LP; Department of Head and Neck Surgery and Otorhinolaryngology, A.C.Camargo Cancer Center, São Paulo, Brazil., Rogatto SR; Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark. Electronic address: silvia.regina.rogatto@rsyd.dk.

Publikováno v: Oral oncology [Oral Oncol] 2021 Nov; Vol. 122, pp. 105545. Date of Electronic Publication: 2021 Sep 28.