Funding for this research was provided by:
University of Lagos Central Research Committee grant (2019/05)
Received: 26 February 2020
Accepted: 27 April 2020
First Online: 4 May 2020
Ethics approval and consent to participate
: Approval for the study was obtained from the Human Research and Ethics Committee of Lagos University Teaching Hospital, Lagos, Nigeria (ethics number ADM/DCST/HREC/APP/2064). Written as well as verbal informed consent are obtained from the parents or caregivers before recruiting any baby into the study.
: Not applicable.
: The authors declared no competing interest for this work.