1. Faculty of Medicine, Pharmacy and Dentistry, Institute of Health and Development, Dakar, Senegal
2. Bounkiling Health District, Regional Health Department, Sédhiou, Senegal
3. Public Health Department, Institute of Odontology and Stomatology, Faculty of Medicine, Pharmacy and Odontostomatology (FMPO), Cheikh Anta Diop University, Dakar, Senegal
4. Faculty of Medicine, Pharmacy and Dentistry, Service of Preventive Medicine and Public Health, Dakar, Senegal