1. Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza Luigi Miraglia 2, IT-80138 Naples, Italy
2. Department of Cardiology, ARNAS Ospedale Civico e Benfratelli, Palermo, Italy
3. Department of Cardiology, Heart Rhythm Managment Centre, UZ Brussel-VUB, Brussels, Belgium
4. Division of Cardiology, Department of Medical Translational Sciences, Monaldi Hospital, University of Campania “Luigi Vanvitelli” Naples, Italy