1 From INSERM (A.S.-M.), Epidemiology of Ageing and Age-related Diseases, Hôpital Paul Brousse, Villejuif Cedex, France; the Department of Epidemiology and Public Health (A.S.-M.), University College London, UK; and the Department of Neurology (R.S.), Clinical Division of Neurogeriatrics, Medical University Graz, Austria. archana.singh-manoux@inserm.fr.
2 From INSERM (A.S.-M.), Epidemiology of Ageing and Age-related Diseases, Hôpital Paul Brousse, Villejuif Cedex, France; the Department of Epidemiology and Public Health (A.S.-M.), University College London, UK; and the Department of Neurology (R.S.), Clinical Division of Neurogeriatrics, Medical University Graz, Austria.