1. Community Heath Master Program, School of Public Health, University of Kinshasa, Kinshasa P.O. Box 11850, Democratic Republic of the Congo
2. Department of Nutrition, School of Public Health, University of Kinshasa, Kinshasa P.O. Box 11850, Democratic Republic of the Congo
3. Patrick Kayembe Research Centre, School of Public Health, University of Kinshasa, Kinshasa P.O. Box 11850, Democratic Republic of the Congo
4. Division of Social and Behavioral Sciences, School of Public Health and Family Medicine, University of Cape Town, Cape Town 7925, South Africa
5. Department of Community Health, School of Public Health, University of Kinshasa, Kinshasa P.O. Box 11850, Democratic Republic of the Congo