Funding for this research was provided by:
University of Capetown
Received: 29 May 2020
Accepted: 12 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Ethics approval was obtained by the University of Cape Town Human Research Ethics Committee (HREC) (HREC Reference: 390/2012). Informed consent was obtained from all participants prior to participating in the study.
: Not applicable.
: The authors declare that they have no competing interests.