1. Department of Cardiology, Maria Vittoria Hospital, Torino, Italy
2. Unit of Clinical Epidemiology, Città della Salute e della Scienza di Torino and CPO Piemonte, Torino, Italy
3. Department of Cardiology, Ca' Foncello Hospital, Treviso, Italy
4. Dipartimento di Scienze Cardiologiche Mediche e Chirurgiche Azienda, Ospedaliera Universitaria, Ospedali Riuniti, Ancona, Italy
5. Department of Cardiac Surgery, Mauriziano Hospital, Torino, Italy
6. Department of Cardiology, Niguarda Ca' Granda Hospital, Milano, Italy
7. Department of Cardiology, University of Brescia, Brescia, Italy
8. Department of Cardiac Surgery, Sacco Hospital, Milano, Italy
9. Dipartimento Cardio, Nefro—Polmonare, Azienda Ospedaliera—Universitaria di Parma, Parma, Italy
10. Department of Cardiology, Cervello Hospital, Palermo, Italy
11. Department of Medical Sciences, University of Turin; Infectious Diseases at Amedeo di Savoia Hospital, Turin, Italy
12. Department of Cardiac Surgery, Molinette Hospital, University of Torino, Torino, Italy