[1] Univ Roma La Sapienza, Sch Med & Psychol, St Andrea Hosp, Dept Emergency Med, I-00185 Rome, Italy
[2] Taunton & Somerset Hosp, Sch Emergency Med, London, England
[3] Univ Brescia, Div Internal & Emergency Med, Brescia, Italy
[4] Univ G DAnnunzio, Inst Cardiol & Ctr Excellence Aging, Chieti, Italy
[5] Cumhuriyet Univ, Dept Cardiol, Sivas, Turkey
[6] Sivas State Hosp, Cardiol Clin, Sivas, Turkey
[7] Maggiore Policlin Hosp, Emergency Med Unit, Fdn IRCCS Ca Granda, Milan, Italy
[8] Nicolaus Copernicus Univ, Dept Cardiol & Internal Med, Ludwik Rydygier Collegium Medicum, Bydgoszcz, Poland
[9] Univ Basel Hosp, Div Cardiol, CH-4031 Basel, Switzerland