Received: 5 November 2019
Accepted: 7 October 2020
First Online: 16 October 2020
Ethics approval and consent to participate
: This study was conducted according to the guidelines laid down in the Helsinki Declaration. All procedures were approved by the National Ethics Committee for Health Research of Senegal (SEN13/67/0272) and National Ethics Committee for Research in Human Health of Cameroon (2017/09/940/CE/CNERSH//SP), from the Ministry of Health of their respective country. Besides the ethical approvals, we obtained verbal informed consent from all subjects, as recommended by both ethics committees.
: Not applicable.
: The authors declare that they have no competing interests.