Funding for this research was provided by:
National Research Foundation (2015/014)
ADB-HEST programme (005)
ARISE-ACP scholarship fund (005)
Article History
Received: 28 September 2017
Accepted: 23 May 2018
First Online: 8 June 2018
Ethics approval and consent to participate
: Written consent was obtained from all study participants or their guardians (for those under the age of 18Â years). Ethics approval to conduct this study was obtained from Higher Research and Ethics Committee of the University of Cape Town, Faculty of Health Sciences (HREC 014/2015).
: The authors declare that they have no competing interests.
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