1. Department of Cardiology, IRCCS Policlinico S. Donato, San Donato Milanese, 20149 Milan, Italy
2. Department of Cardiology, Interventional Cardiology Unit, San Raffaele Scientific Institute, Via Olgettina Milano, 58, 20132 Milano MI, Italy
3. Cardiothoracic Department, Spedali Civili Brescia, Piazzale Spedali Civili, 1, Brescia, Italy
4. Catheterisation Laboratory, Cardiothoracic and Vascular Department, University of Pisa, Via Piero Trivella, 56124 Pisa, Italy
5. Division of Cardiology, Ferrarotto Hospital, University of Catania, Via S. Sofia, Catania, Italy
6. Department of Cardiology, Interventional Cardiology Unit, ASST Ovest Milanese, Legnano Hospital, Via Papa Giovanni Paolo II, 20025 Legnano, Italy
7. Department of Cardiology, “De Gasperis” Cardio Center, ASST Niguarda Metropolitan Hospital, Piazza Ospedale Maggiore, 3 Milano, Italy
8. Department of Cardiology, Interventional Cardiology Unit, S. Camillo Forlanini Hospital, Circonvallazione Gianicolense, 87, 00152 Roma, Italy