Received: 31 October 2019
Accepted: 13 September 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: The study is part of a thesis. The committee of the “Ecole Doctorale Science de la Vie et de la Terre (ED-SVT) of the University of Abomey-Calavi (UAC) under the number 10185509 has authorized it and obtaining verbal consent from the participants. This choice is justified by the fact that the study population consists mainly of illiterates. To obtain participant consent, study information’s were presented to participants in their local languages. And if necessary, answers were given to all their questions. Then, each participant gave his verbal consent which was recorded and archived.
: Not applicable.
: No conflict of interest.