1. From Department of Cardiology, Copenhagen University Hospital Gentofte, Hellerup, Denmark (M.W., F.F., C.M.H., S.R., L.K., K.B.S., P.W., G.H.G.); Prehospital Emergency Medical Services: The Capital Region of Denmark, Copenhagen, Denmark (F.K.L., S.L.N.); Institute of Health, Science and Technology, Aalborg University, Denmark (K.K., S.M.H., R.N.M., C.T.P.); The Heart Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark (B.R., L.K.); Prehospital Emergency Medical Services: The...