1. Cardiovascular Department, European Hospital, Rome, Italy
2. Division of Cardiology, University of Verona, Italy
3. Cardiovascular Department of Humanitas Gavazzeni Hospital, Bergamo, Italy
4. Division of Cardiology, Istituto Clinico Humanitas, Rozzano, Italy
5. Division of Cardiology, Ospedale Civile di Mirano, Italy