1. African Population and Health Research CenterNairobi, Kenya
2. Department of Global HealthAcademic Medical Center, University of Amsterdam and Amsterdam Institute for Global Health and Development, Amsterdam, The Netherlands
3. Department of Global Health and DevelopmentLondon School of Hygiene and Tropical Medicine, London, UK
4. Department of Public HealthAcademic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
5. Department of Family MedicineAcademic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
6. Departments of Vascular and Internal MedicineAcademic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
7. Department of Infectious Disease EpidemiologyLondon School of Hygiene and Tropical Medicine, London, UK
8. Amsterdam Institute for International Development (AIID)Faculty of Economics and Business Administration, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands