1. Division of Cardiology, S. Filippo Neri Hospital, Roma, Italy
2. Division of Cardiology, Garibaldi-Nesima Hospital, Catania, Italy
3. Department of Internal Medicine and Medical Specialties, Sapienza University of Roma, Italy
4. Division of Cardiology, Istituti Clinici Scientifici Maugeri, IRCCS, Veruno (Novara), Italy
5. ANMCO Research Center, Fondazione per il Tuo cuore, Firenze, Italy
6. Division of Cardiology, S. Pertini Hospital, Roma, Italy
7. Division of Cardiology, Niguarda Ca’Grande Hospital, Milano, Italy
8. Cardiology Unit, Università degli Studi Magna Graecia, Catanzaro, Italy
9. Division of Cardiology, Augusto Murri Hospital, Fermo, Italy
10. Division of Cardiology, S. Giovanni Evangelista Hospital, Tivoli (Roma), Italy