Funding for this research was provided by:
National Institutes of Health (D43TW010131)
South African Medical Research Council (SIR Grant)
Received: 12 March 2021
Accepted: 12 August 2021
First Online: 21 September 2021
: This research study received ethics approval from the University of KwaZulu-Natal Biomedical Research Ethics Committee (BE541/17). Participants signed informed consent forms.
: No individual person’s data, images or videos is reported in this manuscript. All participants signed informed consent forms prior to participating in the study.
: The authors declare that there are no competing interests.