1 Valle del Golfo Health Center, Servicio Canario de Salud, El Hierro, Spain.
2 Cardiac Imaging Laboratory, Department of Cardiology, University Hospital of Canary Islands, Ofra s/n, La Cuesta, 38320, La Laguna, Tenerife, Spain.
3 Department of Cardiology, Hospital San Juan de Dios, Tenerife, Spain.
4 Heart Rhythm Service, Kingston General Hospital, Queen's University, Kingston, ON, Canada.
5 Department of Cardiology, Servicio de Cardiología, Hospital General Universitario Gregorio Marañón, CIBERCV and Universidad Europea, Universidad Complutense, Madrid, Spain.