Funding for this research was provided by:
Eunice Kennedy Shriver National Institute of Child Health and Human Development (R21HD084274-01A1)
Text and Data Mining valid from 2020-04-28
Received: 29 November 2019
Accepted: 13 April 2020
First Online: 28 April 2020
Ethics approval and consent to participate
: Ethical approval was obtained on 27 July 2017 from the University of Pretoria, Faculty of Health Sciences, Research Ethics Committee (Ref: 401/2015) and the University of California Los Angeles (Ref: 15–001351). Implementation approval was provided by the Eastern Cape provincial and the Buffalo City Metro Departments of Health. All eligible participants were told about the study and read aloud the study consent form. All participants provided written informed consent prior to enrollment and being interviewed.
: Not applicable.
: The authors declare that they have no competing interests.