Received: 2 November 2021
Accepted: 2 February 2022
First Online: 22 February 2022
: The study was approved by UTH, the University of Zambia Biomedical Research Ethics Committee (REF. NO. 012-02-19), the University of Maryland Baltimore institutional review board (IRB) (FWA#00007145), and the National Health Research Authority. A waiver of informed consent was obtained from the IRBs and no patient identifiers were used.
: Not applicable.
: The authors declare that they have no competing interests.