Funding for this research was provided by:
European and Developing Countries Clinical Trials Partnership (RIA2016S-1632)
Received: 6 March 2021
Accepted: 10 June 2022
First Online: 12 July 2022
: Ethical approval for all study procedures was obtained from the institutional review of the London School of Hygiene and Tropical Medicine (LSHTM) (#14985), and the Bio-medical Ethics Committee of the University of Zambia (005/02/18). Written consent was obtained from all participants prior to data collection activities.
: Consent for publication was obtained from all participants, and consent forms would be available on request.
: This project is part of the EDCTP2 programme supported by the European Union (grant number RIA2016S-1632-TREATS). The views and opinions of authors expressed herein do not necessarily state or reflect those of EDCTP. The authors have no competing interest to declare.