1. Division of Cardiology, Maggiore della Carità Hospital, University of Eastern Piedmont , Novara, Italy
2. Division of Cardiology, University of Turin A.O.U. Città della Salute e della Scienza di Torino , Corso Bramante 85, 10126 Turin, Italy
3. Division of Cardiology, Fondazione IRCCS Policlinico San Matteo , Pavia, Italy
4. Division of Cardiology, San Raffaele Hospital , Milan, Italy
5. Division of Cardiology, San Giovanni Bosco , Turin, Italy
6. Department of Cardiology, Kerckhoff Heart and Thorax Center , Frankfurt, Germany
7. Department of Cardiology, University Hospital Virgen Arrtixaca , Murcia, Spain
8. Division of Cardiology, San Luigi Hospital , Rivoli, Italy
9. Cardiology Department, University Hospital of Wales , Cardiff, UK
10. Academic Medical Center, University of Amsterdam , Amsterdam, the Netherlands
11. Department of Cardiology and Structural Heart Diseases, Medical University of Silesia , Katowice, Poland
12. Division de Cardiologìa, Hospital Universitario de Canarias , Santa Cruz de Tenerife, Spain
13. Department of Cardiology, University Hospital Álvaro Cunqueiro , Vigo, Spain