Funding for this research was provided by:
Received: 15 March 2021
Accepted: 21 June 2021
First Online: 9 July 2021
: The study is part of a larger trial, which was approved by the Ethical Cantonal Board of Geneva, Switzerland (CCER, N°2017-0110 and CER-amendment n°2) and the Cameroonian National Ethics Committee for Human Health Research (N°2018/07/1083/CE/CNERSH/SP).
: Not applicable.
: The authors declare that they have no competing interests.