1. Division of Cardiology, Ospedale degli Infermi, ASL Biella, Biella, Italy
2. Division of Cardiology, Azienda Ospedaliera-Universitaria “Maggiore della Carità”, Eastern Piedmont University, Novara, Italy
3. Department of Cardiology, UMC St Radboud, Nijmegen, Netherlands
4. Division of Cardiology, AZ Sint Jan, Bruges, Belgium