Fontes Marx, Mayara http://orcid.org/0000-0002-7786-5438
London, Leslie
Harker, Nadine
Ataguba, John E.
Article History
Received: 8 February 2019
Accepted: 21 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: The study was approved by the Human Research Ethics Committee of the Faculty of Health Sciences at the University of Cape Town (HREC reference number: 798/2017).
: Not applicable.
: The authors declare that they have no competing interests