Received: 13 February 2023
Accepted: 2 May 2023
First Online: 15 May 2023
: The ethical clearance for this study was issued by the Institutional Review Board of the Faculty of Health Sciences, University of Buea (ref. N<sup>o</sup>: 2019/934-01/UB/SG/IRB/FHS). Administrative approval was obtained from the Medical Director of the Douala General Hospital. The need for informed consent was officially waived by the ethics committee of the Institutional Review Board of the Faculty of Health Sciences due to the retrospective design of the study, and the anonymous nature of the data collection process. To ensure confidentiality, all patient information was coded. All methods were performed by ethical guidelines as stipulated in the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.