1. Department of Preventive Medicine and Public Health, University Cheikh Anta Diop, Dakar, Sénégal; Institute of Health and Development, University Cheikh Anta Diop, Dakar, Sénégal
2. Institute of Health and Development, University Cheikh Anta Diop, Dakar, Sénégal
3. Department of Preventive Medicine and Public Health, University Cheikh Anta Diop, Dakar, Sénégal
4. Department of Community Health, University Alioune Diop de Bambey, Diourbel, Senegal