Fasunla, Ayotunde James http://orcid.org/0000-0001-9535-9224
Totyen, Ebidisemere Linda
Onakoya, Paul Adekunle
Nwaorgu, Onyekwere George
Article History
Received: 21 October 2019
Accepted: 30 December 2019
First Online: 17 February 2020
Ethics approval and consent to participate
: Ethical approval was obtained to conduct the study from Ethical Review Committee of Joint University of Ibadan/University College Hospital, Ibadan, Nigeria (UI/EC/12/0045). Written permission was obtained from the State Ministry of Education and head teachers of the purposively selected schools. Written informed consent was also obtained from the parents of all the participants. Data collection was done in accordance with the Helsinki Declaration of 1975 as revised in 1996.
: Not applicable
: The authors declare that they have no competing interests.