1. Department of Cardiology; San Juan University Hospital, Miguel Hernández University; Alicante Spain
2. Department of Cardiology; Research Agency of the Spanish Society of Cardiology; Madrid Spain
3. Department of Cardiology; University Hospital Reina Sofía; Córdoba Spain
4. Department of Cardiology; Bellvitge University Hospital, L'Hospitalet de Llobregat; Barcelona Spain
5. Department of Cardiology; University Institute in Health Sciences, University of A Coruña, A Coruña Biomedical Research Institute; A Coruña Spain
6. Department of Cardiology; Hospital Clinic of València, University of Valencia; Valencia Spain
7. Department of Cardiology; University Hospital La Paz; Madrid Spain
8. Department of Cardiology; University Hospital Virgen de la Arrixaca; Murcia Spain