Funding for this research was provided by:
Fogarty International Center (TW010682)
South African Medical Research Council (MRC SIR)
Received: 16 November 2020
Accepted: 3 February 2021
First Online: 12 February 2021
Ethical approval and consent to participate
: The Stellenbosch University Health Research Ethics Committee and the Tygerberg Hospital management reviewed and approved the study protocol (N18/07/068).
: The authors have no conflicts of interest to declare.