1. S.C.U. Medicina d’Urgenza, A.O.U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy (F.M.).
2. Cardiovascular Research Institute, University Hospital of Basel, Switzerland (C.M.).
3. Emergency Care Unit, Heart Institute, University of São Paulo, Brazil (A.d.M.S.).
4. Department of Emergency Medicine, Campus Benjamin Franklin, Charité – Universitätsmedizin Berlin, Germany (B.A.L.).
5. Department of Emergency Medicine, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy (S.A.T.S.).
6. Department of Emergency Medicine, Careggi University Hospital, Firenze, Italy (P.N.).