1. Acute Cardiac Care Unit, Department of Cardiology Hospital Universitario de Canarias Ctra. La Cuesta—Taco, Ofra s/n, 38320 San Cristóbal de La Laguna Tenerife Spain
2. Institut Municipal d'Investigacions Mèdiques (IMIM) Barcelona Spain
3. Heart Failure Unit, Department of Internal Medicine Hospital Arnau de Vilanova, Institut de Recerca Biomédica de Lleida (IRBLleida) Lleida Spain
4. Department of Cardiology Hospital Universitario Gregorio Marañon, CIBERCV, Universidad Europea, Universidad Complutense Madrid Spain
5. Department of Cardiology Hospital Universitario Regional Carlos Haya Málaga Spain
6. Department of Cardiology Hospital Clínico Universitario de Valladolid, CIBERCV Valladolid Spain
7. Heart Failure Unit, Department of Cardiology Hospital Universitario Virgen de las Nieves Granada Spain
8. Department of Cardiology Hospital Sierrallana Torrelavega Spain
9. Clinical Research Unit Hospital Universitario de Canarias Tenerife Spain