1. Cardiology Department, Grande Ospedale Metropolitano, GOM, AO Bianchi Melacrino Morelli, 89129 Reggio di Calabria, Italy
2. Cardiology Department, San Camillo Forlanini Hospital, 00152 Rome, Italy
3. Cardiology Department, Mauriziano Hospital, 10128 Torino, Italy
4. Clinical and Rehabilitation Cardiology Department, San Filippo Neri Hospital, ASL Roma 1, 00135 Roma, Italy
5. Cardiology Unit, Giovanni Paolo II Hospital, 88046 Lamezia, Italy
6. Ferrari Hospital, 87012 Castrovillari, Italy
7. Ospedale Santissima Annunziata, 87100 Cosenza, Italy
8. Cardiothoracic Department, Brussels University Hospital, 1090 Jette, Belgium
9. Division of Clinical Cardiology, A.O.R.N. ‘Sant’Anna e San Sebastiano’, 81100 Caserta, Italy
10. De Gasperis Cardio Center, Niguarda Hospital, 20162 Milano, Italy
11. Cardiothoracic Department, Garibaldi Nesima Hospital, 95122 Catania, Italy
12. Cardiothoracic Department, Maastricht University, 6211 LK Maastrich, The Netherlands