1. Department of Health Sciences Public University of Navarre Pamplona Spain
2. Navarrabiomed, Hospital Universitario de Navarra (HUN), Universidad Pública de Navarra (UPNA), IdiSNA Pamplona Spain
3. CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III Madrid Spain
4. Hospital of Eibar, OSI Debabarrena, Osakidetza Eibar Spain
5. Grupo de Investigación en Atención Primaria, Biodonostia Institute of Health Research San Sebastian Spain
6. Geriatric Department Hospital Universitario de Getafe Madrid Spain
7. Geriatric Department Hospital Universitario de Navarra (HUN) Pamplona Spain