Funding for this research was provided by:
Received: 20 March 2020
Accepted: 2 August 2020
First Online: 8 August 2020
Ethics approval and consent to participate
: Ethical approval of the study was obtained from the Local Ethics Committee for Biomedical Research of the University Parakou on November 20, 2018 under reference 0099/CLERB-UP/P/SP/R/SA. All participants were informed about the study and signed a consent form before participating.
: Not applicable.
: The authors declare that they do not have any competing interests.