1Service de Médecine Interne et Gérontologie Clinique, Gérontopôle, CHU Toulouse, INSERM, Toulouse, 1027, France
2IRCCS Istituti Clinici Scientifici Maugeri, University of Milan, Milan, Italy
3Tufts University, Boston, MA, USA
4Division of Epidemiology, Public Health and Health Economics, University of Liege, Liege, Belgium
5Gerontopole, INSERM U1027, Alzheimer's Disease Research and Clinical Center, Toulouse University Hospital, Toulouse, France
6Servicio de Geriatría, Hospital Universitario Ramón y Cajal (IRYCIS), Madrid, Spain