1. Cardiology Department, Grande Ospedale Metropolitano, GOM, AO Bianchi Melacrino Morelli, 89124 Reggio Calabria, Italy
2. Cardiology Unit, ASST Grande Ospedale Metropolitano Niguarda, 20162 Milano, Italy
3. Cardiology Department, Cannizzaro Hospital, 95126 Catania, Italy
4. Operative Unit of Cardiology, P. Borsellino Hospital, Marsala, ASP Trapani, 91016 Erice, Italy
5. Arrhytmia Unit, Division of Cardiology, Ospedale San Paolo, Azienda Sanitaria Locale 2, 17100 Savona, Italy
6. Sant’Andrea Hospital, ASL 5 Regione Liguria, 19124 La Spezia, Italy
7. Cardiology Unit, Giovanni Paolo II Hospital, 97100 Lamezia, Italy
8. Clinical and Rehabilitation Cardiology Department, San Filippo Neri Hospital, ASL Roma 1, 00135 Roma, Italy
9. Cardiology Department, Mauriziano Hospital, 10128 Torino, Italy
10. Cardiology Unit, Città di Castello Hospital, 06012 Città di Castello, Italy
11. Cardiology Department, Sant’Antonio Abate Hospital, ASP Trapani, 91100 Erice, Italy
12. Cardiovascular Department, Sant’Anna e San Sebastiano Hospital, 95122 Caserta, Italy
13. Cardiovascular Research Institute, Maastricht University, 6211 LK Maastricht, The Netherlands
14. Cardiology Department, F. Miulli Hospital, Acquaviva delle Fonti, 70021 Bari, Italy
15. Cardiology Department, Garibaldi Nesima Hospital, 95122 Catania, Italy