1 University Institute of France (IUF), Paris, France; Clinical Gerontology Department, Nantes University Hospital, Nantes, France. Electronic address: el.haj@hotmail.fr.
2 Epsylon laboratory, University of Paul Valéry Montpellier 3, Montpellier, France; Department of Adult Psychiatry, Montpellier University Hospital, Montpellier, France.
3 Université de Reims Champagne-Ardenne, Laboratoire Cognition Santé Société (C2S, UR 6291), Reims, France; Paul Guiraud Hospital Group, Villejuif, France.