1. Department of Population Health, London School of Hygiene & Tropical Medicine, Faculty of Epidemiology and Population Health University of London London UK
2. Department of Medical Statistics, London School of Hygiene & Tropical Medicine, Faculty of Epidemiology and Population Health University of London London UK
3. Holt International‐Uganda Office Kampala Uganda
4. London School of Hygiene & Tropical Medicine, Centre for Maternal, Adolescent, Reproductive, & Child Health (MARCH) University of London London UK
5. Holt International Eugene Oregon USA