Funding for this research was provided by:
Fogarty International Center (D43TW007004)
Council for Scientific and Industrial Research, South Africa (Meraka Institute)
Received: 3 January 2018
Accepted: 24 July 2018
First Online: 7 August 2018
Ethics approval and consent to participate
: Ethical clearance for this study was granted by the Humanities and Social Sciences Research Ethics Committee of the University of KwaZulu-Natal, reference number protocol reference HSS/1609/014D.
: Not applicable
: The authors declare that they have no competing interests.
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