Funding for this research was provided by:
CRDF Global (DAA3-16-62705-1)
National Institutes of Health (U01AI069924-09,)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (320030_169967)
Received: 16 January 2019
Accepted: 17 April 2019
First Online: 3 May 2019
Ethics approval and consent to participate
: Permission to use the routinely collected NHLS and NCR data was sought from the relevant authorities. Ethical approval to conduct the study was granted by the University of the Witwatersrand Human Research Ethics Committee [Ethics certificate numbers (SAM: M160944) and (BCAH: M171083)].
: Not applicable.
: The authors declare that they have no competing interests.
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