[1] Haukeland Hosp, Dept Heart Dis, Jonas Lies Vei 65, N-5021 Bergen, Norway
[2] Univ Bergen, Haukeland Univ Hosp, Dept Clin Sci, Lab Bldg,Jonas Lies Vei 87, N-5020 Bergen, Norway
[3] Linnaeus Univ, Ctr Interprofess Collaborat Emergency Care CICE, Univ Platsen 1, S-35252 Vaxjo, Sweden
[4] Odense Univ Hosp, Dept Cardiol, JB Winslows Vej 4, DK-5000 Odense, Denmark
[5] Univ Southern Denmark, Fac Hlth Sci, Dept Clin Res, Campus Vej 55, DK-5230 Odense, Denmark
[6] Stavanger Univ Hosp, Dept Cardiol, N-4011 Stavanger, Norway
[7] Yale Univ, Yale Sch Med, Dept Internal Med, 300 George St 7th FL, New Haven, CT 06437 USA
[8] Yale Univ, Yale Sch Publ Hlth, Dept Biostat, 300 George St 7th FL, New Haven, CT 06437 USA
[9] Oslo Univ Hosp, Dept Cardiol, Sognsvannsveien 20, N-0372 Oslo, Norway
[10] Univ Oslo, Inst Clin Med, Sosterhjemmet, Kirkeveien 166, N-0450 Oslo, Norway
[11] Univ Cambridge, Dept Publ Hlth & Primary Care, Forvie Site, Cambridge Biomed Campus,Sch Clin Med, Cambridge, England