Received: 8 December 2020
Accepted: 31 August 2021
First Online: 10 September 2021
: Ethical approval for the study was obtained from the Ethics and Research committee of Nnamdi Azikiwe University Teaching Hospital, Nnewi (NAUTH/CS/66/VOL.9/154/2016/127). Permission was obtained from the Post Primary Schools Board, Nnewi zone, the State Ministry of Education (MOE/SCHD/1570/VOL.I/64), and the Principals of the schools. Written informed consent was obtained from participants before the commencement of the study. Each parent/guardian of participants less than 18 years old signed the informed consent document for his/her child/ward. Assent was given by participants less than 18 years old. The informed consent form was delivered to the parents/guardians through prospective participants. The guidelines on research involving the use of human subjects (beneficence, non-maleficence, veracity, confidentiality, voluntarism) were strictly adhered to according to the Helsinki Declaration. Participants did not incur any cost by participating in this study and there was no financial inducement.
: Not applicable.
: The authors declare that they have no competing interests