1. 2nd Division of Cardiology, “Maggiore della Carità” University Hospital, Italy
2. Divisione di Cardiologia, Ospedale S. Andrea, Italy
3. Cardiologia Interventistica, A.O. Fatebenefratelli, Italy
4. University of Florida College of Medicine-Jacksonville, USA
5. Division of Cardiovascular Diseases, Mayo Clinic, USA
6. Istitute of Cardiology, UCSC, Italy