1. Laboratory of Epidemiology of Chronic and Neurological Diseases, University of Abomey-Calavi, Cotonou, Benin
2. University Neurology Clinic of the CNHU-HKM of Cotonou, Cotonou, Benin
3. Inserm U1094, IRD U270, Univ. Limoges, EpiMaCT - Epidemiology of chronic diseases in tropical areas, Institute of Epidemiology and Tropical Neurology, OmegaHealth, Limoges, France
4. Clinic of Neurology, Teaching Hospital of Parakou, Parakou, Benin