Gnangnon, Freddy, Faculty of Health Sciences, University of Abomey-Calavi, Republic of Benin Inserm U1094, IRD U270, Univ. Limoges, CHU Limoges, EpiMaCT - Epidemiology of chronic diseases in tropical zone, Institute of Epidemiology and Tropical Neurology, Omega Health, Limoges, France, Benin