1. Centro Cardiologico Monzino, IRCCS, Italy
2. Cardiology Division, Cardiac Arrhythmia Centre and Cardiomyopathies Unit, San Camillo-Forlanini Hospital, Italy
3. Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milano, Italy
4. Cardiology and Intensive Care Unit, Cervello Hospital, Italy
5. Cardiovascular Rehabilitation Unit, Buccheri La Ferla Fatebenefratelli Hospital, Italy