1. Department of Internal Medicine and Geriatrics, Gérontopôle University of Toulouse Toulouse France
2. Department of Geriatrics, Bichat Hospital Assistance Publique – Hôpitaux de Paris Paris France
3. Institut National de la Santé et de la Recherche Médicale UMR 1027 University of Toulouse III Toulouse France
4. Doctoral School of Public Health—ED560 Paris‐Sud University Paris France
5. Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ca' Granda‐Ospedale Maggiore Policlinico Università di Milano Milan Italy
6. Department of Nuclear Medicine Hôpital Purpan—Centre Hospitalier Universitaire de Toulouse Toulouse France
7. Department of Public Health Centre Hospitalier Universitaire de Toulouse Toulouse France