Funding for this research was provided by:
National Institute on Drug Abuse
AIDS Clinical Trials Group
Received: 11 April 2020
Accepted: 21 December 2020
First Online: 19 January 2021
Ethics approval and consent to participate
: All participants provided written informed consent. Study procedures were overseen by the Human Research Ethics Committee of the University of Cape Town (UCT-HREC 004/2015).
: Not applicable.
: The authors declare that they have no competing interests.