1 Department of Internal Medicine and Geriatrics, MUSE University, Montpellier, France; Pôle de Gérontologie, CHU de Montpellier, 39, avenue Charles Flahault, 34295 Montpellier Cedex 5, France. Electronic address: h-blain@chu-montpellier.fr.
2 Department of Internal Medicine and Geriatrics, Nancy University hospital, Nancy, France.
3 Euromov, University of Montpellier, 700, avenue du Pic Saint Loup, Montpellier, France.