From the Department of Cardiology, Gentofte University Hospital, Hellerup (F.F., G.H.G., M.L.H., T.K.S., R.S., E.L.F., S.S.A., C.T.-P.); Emergency Medicine and Emergency Medical Services, Head Office (F.K.L.), and Mobile Emergency Care Unit of Copenhagen (S.L.N.), Capital Region of Denmark; Department of Cardiology, Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen (L.K.); and National Institute of Public Health, Copenhagen (S.R.), Denmark. (At 2009-08-11)
