[1] Univ Trieste, Cardiothoracovascular Dept, I-34100 Trieste, Italy
[2] Univ Libre Bruxelles ULB, Erasmus Hosp, Div Cardiol, B-1050 Brussels, Belgium
[3] Univ Silesia, Dept Med, PL-40032 Katowice, Poland
[4] ASL Biella, Osped Infermi, Div Cardiol, I-13875 Biella, Italy
[5] IRCCS Hosp Galeazzi Sant Ambrogio, Div Cardiol, I-20161 Milan, Italy
[6] Univ Messina, Div Cardiol, AOU Policlin G Martino, I-98100 Messina, Italy
[7] Univ Messina, Dept Clin & Expt Med, I-98100 Messina, Italy