[1] Univ Helsinki, Cent Hosp, Div Emergency Care, FIN-00014 Helsinki, Finland
[2] Univ Helsinki, Cent Hosp, Dept Med, FIN-00014 Helsinki, Finland
[3] Lariboisiere Univ Hosp, INSERM UMR 942, Paris, France
[4] Lariboisiere Univ Hosp, AP HP, Dept Anesthesiol & Crit Care Med, Mobile Care Unit, Paris, France
[5] St Louis Univ Hosp, INSERM UMR 717, Paris, France
[6] Univ Basel Hosp, Dept Internal Med, CH-4031 Basel, Switzerland
[7] Baylor Coll Med, Houston, TX 77030 USA
[8] Univ Hosp Brno, Dept Internal Med & Cardiol, Brno, Czech Republic
[9] Masaryk Univ, Fac Med, Brno, Czech Republic
[10] Univ Med Ctr Utrecht, Dept Cardiol, Utrecht, Netherlands
[11] Toulouse Univ Hosp, Dept Cardiol, Toulouse, France
[12] Konventhosp Barmherzige Brueder, Dept Lab Med, Linz, Austria
[13] Univ Roma La Sapienza, St Andrea Hosp, Emergency Dept, I-00185 Rome, Italy
[14] Univ Brescia, Dept Expt & Appl Med, Brescia, Italy
[15] Virgen Arrixaca Hosp, Serv Cardiol, Murcia, Spain
[16] Univ Murcia, Dept Med, Murcia, Spain
[17] Univ Murcia, Fac Med, Murcia, Spain
[18] Lariboisiere Univ Hosp, AP HP, Dept Emergency Med, Paris, France
[19] Lariboisiere Univ Hosp, AP HP, Dept Cardiol, Paris, France
[20] Fattouma Bourguiba Univ Hosp, Emergency Dept, Monastir, Tunisia
[21] Fattouma Bourguiba Univ Hosp, Res Unit UR06SP21, Monastir, Tunisia
[22] Nippon Med Sch, Musashi Kosugi Hosp, Tokyo 113, Japan
[23] Massachusetts Gen Hosp, Div Cardiol, Boston, MA 02114 USA