1. Department of Cardio-Thoracic-Vascular Area, Foundation IRCCS Cà Granda Ospedale Maggiore Policlinico, 20154 Milan, Italy
2. Division of Cardiology, Department of Health Sciences, San Paolo Hospital, University of Milan, 20133 Milan, Italy
3. Department of Clinical Sciences and Community Health, University of Milan, 20133 Milan, Italy
4. Fondazione Poliambulanza, Cardiothoracic Department Unit, 25100 Brescia, Italy