1. Department of Cardiology, Cardiovascular Institute (ICCV), CLÍNIC—Barcelona University Hospital , Carrer Villarroel 170, 08036 Barcelona, Catalonia , Spain
2. Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) , Department of Arrhythmia Research, C/del Rosselló, 149, 08036 Barcelona, Catalonia , Spain
3. Centro de Investigación Biomédica en Red, Cardiovascular Diseases (CIBERCV) , Av. Monforte de Lemos, 3-5, 28029 Madrid , Spain