1. Cardiology Unit, Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
2. Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Policlinico Universitario Umberto I, Sapienza University of Rome, Rome, Italy
3. Cardiology Unit, San Vincenzo Hospital, Taormina, Italy
4. Department of Cardiac Surgery, Heidelberg University Hospital, Heidelberg, Germany
5. Cardiology Unit, “Card. G. Panico” Hospital, Tricase, Italy
6. Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium