1. Arrhythmia Section, Department of Cardiology, Virgen del Rocío University Hospital, Avda Manuel Siurot s/n, Seville, Spain
2. Arrhythmia Section, Department of Cardiology, Thorax Institute, Hospital Clínic and IDIBAPS (Institut d’Investigació Agustí Pi i Sunyer), C/Villarroel 170, Barcelona, Catalonia, Spain
3. Arrhythmia Section, Department of Cardiology, Puerta del Mar University Hospital, C/ Ana de Viya 21. Cádiz, Spain
4. PhySense Group, Department de Tecnologies de la Informació i les Comunicacions (DTIC), Universitat Pompeu Fabra, Carrer Roc Boronat 138, Tànger Building, Office 55.107, Barcelona, Spain