Received: 8 February 2018
Accepted: 27 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: Permission to perform this research was obtained from the Human Research Ethics Committee of the University of the Witwatersrand [HREC No. M161043] and the research committees of Gauteng Province and each health district. All respondents provided informed written consent to participate and to be audiotaped.
: Not applicable.
: The authors declare that they have no competing interests.
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