1. Department of Cardiology, University of Campania “L.Vanvitelli”, Monaldi Hospital, 80131 Naples, Italy
2. Department of Cardiology, Umberto I Hospital, 84014 Nocera, Italy
3. Emergency Department, Rizzoli Hospital, Health Authority Naples 2, Ischia, 80076 Naples, Italy
4. Department of Cardiology, Monaldi Hospital, 80131 Naples, Italy