Received: 30 January 2021
Accepted: 15 July 2021
First Online: 25 October 2021
: The study was authorized by the ethics committee of the Catholic University of Bukavu (UCB/CIES/NC/02B/2019) and by the technical division of the Ministry of Public Health of the DRC (South Kivu Province). All mothers enrolled in the study gave their informed consent. We attest that there is no conflict of interest in relation to this study.
: Not applicable.
: The authors declare that they have no competing interests.