Received: 21 May 2021
Accepted: 11 March 2022
First Online: 3 June 2022
: The National Ethics Committee of Cameroon approved the study protocols. Informed written consent for those who could read and write while legal authorization from the next of kin for those who could not read and write was obtained from each participant before enrolment in the study. This study was performed in accordance with the principles of the declaration of Helsinki and its appendices.
: Written informed consent was obtained from patients for publication of the study result as an aggregate data. The data is available to the corresponding author on request.
: We declare that we have no competing interests.