1. Clinica Montevergine Mercogliano Avellino Italy
2. Second Division of Cardiology Cardiac Thoracic Vascular Department New Santa Chiara Hospital Azienda Ospedaliero Universitaria Pisana Pisa Italy
3. Anthea Hospital Bari Italy
4. Boston Scientific Milan Italy
5. Laboratorio di Elettrofisiologia Clinica San Michele Maddaloni Caserta Italy
6. Division of Cardiology San Filippo Neri Hospital Rome Italy
7. Department of Cardiovascular Sciences Fondazione Policlinico Universitario Agostino Gemelli IRCCS Rome Italy
8. Institute of Cardiology Catholic University of Sacred Heart Rome Italy
9. Arrhythmology Unit Ospedale San Giovanni Calibita Fatebefratelli Isola Tiberina Rome Italy
10. Cardinal Massaia Hospital Asti Italy
11. Electrophysiology Unit Cardiovascular Department Poliambulanza Institute Hospital Foundation Brescia Italy