1. Department of Non-communicable Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
2. Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, UK
3. Department of Population Health, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
4. MRC/UVRI and LSHTM Uganda Research Unit, Entebbe, Uganda
5. African Population and Health Research Center (APHRC), Nairobi, Uganda
6. Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Population Health, London School of Hygiene & Tropical Medicine, London, UK
7. Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway