1. Cardiothoracovascular Department, University of Trieste, 34100 Trieste, Italy
2. Cardiology Division, Erasmus Hospital, Université libre de Bruxelles (ULB), 1050 Brussels, Belgium
3. Department Medical, University of Silesia, 40-032 Katowice, Poland
4. Division of Cardiology, Ospedale degli Infermi, ASL Biella, 13875 Biella, Italy
5. Division of Cardiology, IRCCS Hospital Galeazzi-Sant’Ambrogio, 20161 Milan, Italy
6. Division of Cardiology, AOU “Policlinico G. Martino”, and Department of Clinical and Experimental Medicine, University of Messina, 98100 Messina, Italy