Received: 22 January 2020
Accepted: 20 July 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: Ethics approval for the study was obtained from the University of Cape Town’s Health Research Ethics Committee (HREC Ref: 790/2017). Informed written consent was obtained from all research participants.
: Not applicable.
: The authors declare no conflicts of interest. All authors have consented to the publication of this manuscript.