1. Health Surveillance Unit, Unión de Mutuas, 12004 Castellón de la Plana, Spain
2. Department of Medicine, Universitat Jaume I, 12071 Castellón de la Plana, Spain
3. Cardiology Department, H Ramón y Cajal, 28034 Madrid, Spain
4. Department of Medicine, Alcala University, 28801 Madrid, Spain
5. Armunia Health Centre, 24009 León, Spain
6. Casar de Cáceres Health Centre, 10190 Cáceres, Spain
7. Milladoiro Health Centre, 15895 Santiago de Compostela, Spain
8. Instituto de Investigación de Santiago de Compostela (IDIS), 15706 Santiago de Compostela, Spain
9. Centro de Investigación Biomédica en Red-Enfermedades Cardiovasculares (CIBER-CV), 28029 Madrid, Spain