1. Arrhythmia Department, Heart Institute, Teknon Medical Centre, C/Vilana 12 , 08022 Barcelona , Spain
2. Campus Clínic, University of Barcelona, C/Villarroel 170 , 08024 Barcelona , Spain
3. Cardiology, Department of Clinical and Molecular Medicine, St. Andrea Hospital, Sapienza University, Via di Grottarossa 1035 , 00189 Rome , Italy
4. Department of Medical Sciences, University of Turin, Corso Dogliotti 14 , 10126 Turin , Italy
5. Department of Information and Communication Technologies, Pompeu Fabra University, C/Tànger 122-140 , 08018 Barcelona , Spain