1. Department of Epidemiology and Biostatistics, Regional Institute of Public Health, University of Abomey-Calavi, Ouidah, Benin
2. Department of Environmental Health, Regional Institute of Public Health, University of Abomey-Calavi, Ouidah, Benin
3. Department of Health Promotion, Regional Institute of Public Health, University of Abomey-Calavi, Ouidah, Benin