1. Departamento de Medicina Preventiva y Salud Pública; Universidad Autónoma de Madrid/IdiPaz, and Ciber of Epidemiology and Public Health (CIBERESP); Madrid Spain
2. Division of Geriatric Medicine; Hospital Virgen del Valle; Complejo Hospitalario de Toledo Spain
3. Division of Geriatric Medicine; Hospital Universitario de Getafe; Madrid Spain