1. Cardiovascular Institute, Hospital Clínico San Carlos, Healthcare Research Institute, Hospital Clínico San Carlos (IdISSC), Madrid, Spain
2. Heart Failure Unit, Healthcare Research Institute, Hospital Clínico San Carlos (IdISSC), Madrid, Spain
3. Casen Recordati, Vía de las Dos Castillas, 33, 28224 Pozuelo de Alarcón, Madrid
4. Department of Cardiology, Hospital General Universitario, Valencia, Spain