Funding for this research was provided by:
STRIVE research programme consortium funded by UKaid from the Department for International Development
National Institute of Mental Health (UM1AI068619)
National Institute on Drug Abuse (UM1AI068617)
National Institute of Allergy and Infectious Diseases (UM1AI068613)
Received: 27 September 2016
Accepted: 26 July 2017
First Online: 22 August 2017
Ethics approval and consent to participate
: Written informed consent was obtained from all participants prior to data collection and the study was approved by the London School of Hygiene and Tropical Medicine Research Ethics Committee (reference number 6306), the Human Research Ethics Committee (Medical) at the University of Witwatersrand Johannesburg (reference number 120804), the University of North Carolina, Chapel Hill Institutional Review Board (IRB) (no reference number), and the Department of Health, Mpumalanga Province, South Africa (no reference number).
: Not applicable.
: The authors declare that they have no competing interests.
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