Received: 15 June 2020
Accepted: 16 September 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: This study was approved by the health research ethics committee (HREC) of Ahmadu Bello University Teaching Hospital Zaria (Reference number: ABUTH/HREC/CL/05). A written informed consent was obtained from the parents of the patients before they were recruited into the study.
: Consent for publication was obtained from the parents of the participants.