1. Institut de Formation et de Recherches Démographiques, University of Yaoundé II, Yaoundé, Cameroon
2. Research Initiative for Cities Health and Equity (RICHE), Division of Public Health Medicine, School of Public Health and Family Medicine, University of Cape Town, Cape Town, South Africa
3. Global Diet and Activity Research, MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
4. Department of Sociology, University of Yaoundé I, Yaoundé, Cameroon
5. Department of Environment, Health and Living Conditions, Douala City Council, Douala, Cameroon