Funding for this research was provided by:
South African Medical Research Council (Self-Initiated Research Grant)
Article History
Received: 20 April 2020
Accepted: 3 April 2021
First Online: 13 April 2021
Declarations
:
: This study was conducted in accordance with the principles of the Helsinki declaration and approved by the Stellenbosch University (SU) Human Research Ethics Committee (HREC) (S18/07/137). Written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.