Funding for this research was provided by:
Department for International Development, UK Government (PHGHZL69-14)
South African Medical Research Council (RFA-CC: TB/HIV/AIDS-01-2014)
Evidence for HIV Prevention in Southern Africa (MM/EHPSA/WHC/05150015)
Received: 7 February 2020
Accepted: 15 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: All participants provided written informed consent to participate in the study. Ethical approval for the study was obtained from the Human Research Ethics Committee of University of the Witwatersrand in Johannesburg, South Africa.
: Not applicable.
: The authors declare that they have no competing interests.