1. TRANSNUT, WHO Collaborating Centre on Nutrition Changes and Development, Department of Nutrition, Faculty of Medicine, University of Montreal, CP 6128 succursale centre-ville, Montréal, QC, Canada H3C 3J7
2. Departement of Health promotion, Regional Institute of Public Health, 01 BP 918 Cotonou, Benin
3. Departement of Health and Environment, Regional Institute for Public Health, 01 BP 918 Cotonou, Benin
4. Institute of Applied Biomedical Sciences, 01 BP 862 Cotonou, Benin