Funding for this research was provided by:
FP7 Ideas: European Research Council
Received: 3 July 2020
Accepted: 23 July 2022
First Online: 20 August 2022
: Ethical approvals were given by The Gambia Government/Medical Research Council Joint Ethics Committee (SCC1336), the Comité d’Ethique Institutionnel du Centre Muraz in Burkina Faso (A20-2013/CE-CM), the Comité National d’Ethique pour la Recherche en Santé in Benin (0126/MS /DC/SGM/DFR/CNERS/SA) and the Imperial College Joint Ethics Committee. Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that no competing interests exist.