1. Cardiology Unit, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy
2. Clinical Cardiology and Heart Failure Unit, Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT), 90127 Palermo, Italy
3. S.C. Cardiologia, Ospedale Sant’Andrea, 13100 Vercelli, Italy
4. Second Division of Cardiology, Cardio-Thoracic and Vascular Department, Pisa University Hospital, 56124 Pisa, Italy
5. Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, European Reference Networks Guard-Heart, 1050 Brussels, Belgium