Funding for this research was provided by:
South African Medical Research Council
Foundation for the National Institutes of Health
Francis Crick Institute (FC00110218)
Medical Research Council (FC00110218)
Wellcome Trust (104803, 203135)
European and Developing Countries Clinical Trials Partnership (CDF1576)
Catalysis Foundation for Health (OPP51919)
Text and Data Mining valid from 2018-06-25
Received: 5 April 2018
Accepted: 8 June 2018
First Online: 25 June 2018
Ethics approval and consent to participate
: Ethical approval was obtained for all study-related activities from the Stellenbosch University Human Research Ethics Committee (reference numbers N10/01/013 and N14/10/155). All participants signed the informed consent.
: This manuscript does not contain any personal sensitive data and is therefore not applicable.
: The authors declare that they have no competing interests.