1. Interdisciplinary Department of Medicine, Cardiology Unit Polyclinic of Bari University of Bari ‘Aldo Moro’ Bari Italy
2. Unità Operativa di Elettrofisiologia, Studio e Terapia delle Aritmie’ Monaldi Hospital Naples Italy
3. OO.RR. San Giovanni di Dio Ruggi d'Aragona Salerno Italy
4. Policlinico Casilino Rome Italy
5. University of Ferrara, S. Anna University Hospital Ferrara Italy
6. S. Giovanni Battista Hospital Foligno Italy
7. ‘Giovan Battista Grassi’ Hospital Rome Italy
8. Università Politecnica delle Marche, ‘Ospedali Riuniti’ Ancona Italy
9. Policlinico Umberto I Rome Italy
10. S. Anna e S. Sebastiano Hospital Caserta Italy
11. ‘Maria Vittoria’ Hospital Turin Italy
12. Ospedale del Mare, ASL NA1 Naples Italy
13. Ospedale Civile Apuane Massa Italy
14. ‘Bianchi‐Melacrino‐Morelli’ Hospital Reggio Calabria Italy
15. Policlinico Federico II Naples Italy
16. S. Pietro Fatebenefratelli Hospital Rome Italy
17. Boston Scientific Italia Milan Italy