Funding for this research was provided by:
Wellcome Trust (WT208870/Z/17/Z)
Bill and Melinda Gates Foundation (OPP1176150)
Received: 15 March 2019
Accepted: 3 July 2020
First Online: 16 July 2020
Ethics approval and consent to participate
: Ethics approval and consent to participate by the relevant ethics committees and regulatory agencies of the participating countries were described in previous publications [CitationRef removed, CitationRef removed]. The study was approved by the UK National Research Ethics Service (Berkshire Research Ethics Committee reference number 10/H0505/111) and by the London School of Hygiene and Tropical Medicine Ethics Committee (reference number 5536). A written informed consent was obtained for each participant according to the procedures detailed in Shakur et al. [CitationRef removed].
: Not applicable.
: The authors declare that there are no competing interests.