1. Department of Preventive Medicine and Public Health; CIBER of Epidemiology and Public Health (CIBERESP); Universidad Autónoma de Madrid; Idipaz;; Madrid Spain
2. Service of Preventive Medicine; Hospital Universitario Virgen del Rocío; Sevilla Spain
3. Department of Preventive Medicine and Public Health; Universidad de Sevilla; Sevilla Spain
4. Service of Geriatrics; Complejo Hospitalario Universitario de Vigo; Vigo Spain