1. Centre for Sexual Health HIV and AIDS Research (CeSHHAR Zimbabwe); Harare Zimbabwe
2. Department of Public Health, Environments and Society; London School of Hygiene and Tropical Medicine; London UK
3. Department of Population Health; London School of Hygiene and Tropical Medicine; London UK
4. Epidemiology and Public Health; Harvard TH Chan School of Public Health; Boston MA
5. Department of International Public Health; Liverpool School of Tropical Medicine; Liverpool UK