Received: 17 March 2020
Accepted: 25 January 2021
First Online: 4 February 2021
Ethics approval and consent to participate
: The study was approved by the Cameroon Bioethics Initiative Ethics Review and Consultancy Committee (Reference number CBI/429/ERCC/CAMBIN), and permission was sought locally from the authorities of the health facilities and the regional health delegation of Littoral, Cameroon. Verbal and written informed consent were sought from the parents or guardians of study participants, and their information kept confidential.
: Not Applicable.
: The authors declare no conflict of interest.