1. Faculty of Infectious and Tropical Diseases; London School of Hygiene and Tropical Medicine; London UK
2. Faculty of Epidemiology and Population Health; London School of Hygiene and Tropical Medicine; London UK
3. Medical Research Council/Uganda Virus Research Institute; Entebbe Uganda
4. African Population and Health Research Center; Nairobi Kenya
5. Department of Women's and Children's Health; Karolinska Institutet; Stockholm Sweden
6. Department of Health Sciences; University of York; York UK
7. International Agency for Research on Cancer; Lyon France