1. Cardiology Service, Hospital Universitario La Paz, Madrid, Spain
2. Cardiology Service, Hospital San Juan De La Cruz, Jaen, Spain
3. Cardiology Service, Complexo Hospitalario Universitario A Coruña (CHUAC)-CIBERCV, A Coruña, Spain
4. Cardiology Service, Hospital Universitario Severo Ochoa, Madrid, Spain
5. Cardiology Service, Hospital Del Mar, Barcelona, Spain
6. Cardiology Service, Hospital Clinic I Provincial De Barcelona, Barcelona, Spain
7. Cardiology Service, Hospital Clinico de Valencia, Valencia, Spain