1 Research Department, Partners in Health/ Inshuti Mu Buzima, Kigali, Rwanda.
2 Division of HIV/AIDS, STI and Viral Hepatitis, Rwanda Biomedical Center, Kigali, Rwanda.
3 Rwanda Military Hospital, Kigali, Rwanda.
4 King Faisal Hospital, Kigali, Rwanda.
5 Clinton Health Access Initiative (CHAI), Kigali, Rwanda.
6 Research Department, Partners in Health/ Inshuti Mu Buzima, Kigali, Rwanda; Division of Global Health Equity, Brigham & Women's Hospital, Boston, USA. Electronic address: ngupta@pih.org.