1. Department of Public Health, University of Copenhagen, Copenhagen, Denmark
2. Rakai Health Sciences Program, Kampala, Uganda
3. Biomedical Research and Training Institute, Harare, Zimbabwe
4. Department for Infectious Disease Epidemiology, Imperial College London, London, UK
5. London School of Hygiene and Tropic Medicine, London, UK
6. Medical Research Council/Uganda Virus Research Institute, Entebbe, Uganda
7. African Health Research Institute, Durban, South Africa
8. Malawi Epidemiology and Intervention Research Unit, Karonga, Malawi
9. National Institute for Medical Research, Mwanza Research Centre, Mwanza, Tanzania
10. University of KwaZulu-Natal, Durban, South Africa
11. Kenya Medical Research Institute, Kisumu, Kenya