1. Division of Cardiology, Cardiovascular and Thoracic Department "Citta della Salute e della Scienza" Hospital Turin Italy
2. Department of Medical Sciences University of Turin Turin Italy
3. Heart Institute Teknon Medical Centre Barcelona Spain
4. Campus Clínic University of Barcelona Barcelona Spain
5. Arrhythmology Department IRCCS Humanitas Research Hospital Rozzano Italy
6. Division of Cardiology, Department of Clinical and Molecular Medicine, St. Andrea Hospital Sapienza University
7. National Heart and Lung Institute Hammersmith Campus, Imperial College London London UK
8. Department of Cardiology Hammersmith Hospital, Imperial College Healthcare NHS Trust London UK
9. Department of Cardiology Chelsea and Westminster Hospital NHS Foundation Trust London UK
10. Cardiology Unit J Medical Turin Italy