1. Associate Lecturer, School of Public Health, University of Sydney, Sydney, Australia
2. Assistant Professor, THRU Zim, Harare, Zimbabwe; Assistant Professor, London School of Hygiene and Tropical Medicine, London, UK
3. Study Coordinator, THRU Zim, Harare, Zimbabwe
4. Youth Researcher, THRU Zim, Harare, Zimbabwe
5. Youth Researcher, THRU Zim, Harare, Zimbabwe
6. Youth Researcher, THRU Zim, Harare, Zimbabwe
7. Youth Researcher, THRU Zim, Harare, Zimbabwe
8. Associate Professor. THRU Zim, Harare, Zimbabwe; Associate Professor, London School of Hygiene and Tropical Medicine, London, UK
9. Assistant Professor. THRU Zim, Harare, Zimbabwe
10. Research Intern, THRU Zim, Harare, Zimbabwe
11. STI Coordinator, Ministry of Health and Child Care, Harare, Zimbabwe
12. Data manager, THRU Zim, Harare, Zimbabwe
13. Associate Professor, London School of Hygiene and Tropical Medicine, London, UK
14. Professor, THRU Zim, Harare, Zimbabwe; Professor, London School of Hygiene and Tropical Medicine, London, UK
15. Associate Professor, School of Public Health, University of Sydney, Sydney, Australia; Associate Professor, London School of Hygiene and Tropical Medicine, London, UK.