Imam, Abdulazeez http://orcid.org/0000-0001-5070-3060
Farouk, Zubaida L.
Hassan-Hanga, Fatimah
Ihesiulor, Uchechukwu G.
Article History
Received: 8 June 2018
Accepted: 29 January 2019
First Online: 6 February 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Aminu Kano Teaching Hospital (Reference number NHREC/21/08/2008/AKTH/EC/1280) and informed consent was taken from parents or guardians of all enrolled study participants.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.