1. Department of Cardiology, Hospital Clínico San Carlos, 28040 Madrid, Spain
2. Department of Cardiology, Hospital Universitario Arnau de Vilanova, Institut de Recerca Biomedica (IRB), 25198 Lleida, Spain
3. Department of Cardiology, Hospital Virgen de la Macarena, 41009 Sevilla, Spain
4. Department of Cardiology, Complejo Asistencial Universitario de Salamanca, 37007 Salamanca, Spain
5. Department of Cardiology, Hospital Universitario Gregorio Marañón, 28007 Madrid, Spain
6. Department of Cardiology, Hospital de Vall d’Hebron, 08035 Barcelona, Spain
7. Department of Cardiology, Hospital Sant Pau an Creu, 08025 Barcelona, Spain
8. Department of Cardiology, Hospital Universitario de La Princesa, 28006 Madrid, Spain
9. Department of Cardiology, Hospital Universitario de Albacete, 02006 Albacete, Spain
10. Department of Cardiology, Hospital Universitario de Son Espases, 07120 Palma, Spain
11. Department of Cardiology, Hospital Universitario de Málaga, 29010 Malaga, Spain
12. Department of Cardiology, Hospital Álvaro Cunqueiro, 36312 Vigo, Spain
13. Department of Cardiology, Hospital Universitario de Navarra, 31008 Pamplona, Spain
14. Department of Cardiology, Hospital Universitario de Orense, 32005 Orense, Spain
15. Department of Cardiology, Hospital Universitario Joan XXIII, 43005 Tarragona, Spain
16. Department of Cardiology, Hospital Universitario Juan Ramón Jimenez, 21005 Huelva, Spain
17. Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón, Spain