1. MedStar Washington Hospital Center Washington District of Columbia
2. Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health University of Brescia, Cardio‐Thoracic Department, Civil Hospitals Brescia Italy
3. Rutgers New Jersey Medical School Newark New Jersey
4. Cardiovascular and Neurologic Department Misericordia Hospital Grosseto Italy
5. Department of Cardiology, Policlinico Umberto I Sapienza University of Rome Rome Italy
6. Clinical Trials Unit University of Bern Bern Switzerland
7. Division of Cardiology, Sant'Andrea Hospital Rome Italy
8. Thoraxcenter Erasmus Medical Center Rotterdam The Netherlands
9. Department of Cardiology San Giovanni Bosco Hospital Turin Italy
10. Institute of Cardiology “G. d'Annunzio” University Chieti Italy
11. Interventional Cardiology Unit Umberto I Hospital Syracuse Italy
12. Interventional Cardiology Unit, Cardio‐thoracic‐Vascular Department San Raffaele Scientific Institute Milan Italy
13. Division of Cardiology, Department of Cardiothoracic and Respiratory Sciences University of Campania “Luigi Vanvitelli” Naples Italy
14. Department of Clinical and Experimental Medicine University of Messina Messina Italy
15. Cardiology Unit Ospedali Riuniti di Rivoli Turin Italy
16. Unita' Operativa Complessa di Cardiologia ASST di Vimercate (MB) Vimercate Italy
17. Fondazione Toscana G. Monasterio ‐ Ospedale del Cuore G. Pasquinucci, Pisa/Massa Massa Italy
18. Department of Cardiology, Interventional Cardiology Mediterranea Cardiocentro Naples Italy
19. Swiss Cardiovascular Center Bern University of Bern Bern Switzerland