Received: 20 May 2019
Accepted: 29 August 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Ethical Review Committee, Institute of Public Health, Obafemi Awolowo University, Ile-Ife. The participants’ information sheet was given to the parents and the adolescents who were 16 years or above. Important information on the participants’ information sheet included that the information volunteered will be kept confidential as all questionnaires were coded without names or addresses of respondents. It also emphasized that participants were free to opt-out if they were not comfortable with the information in the questionnaire. Informed written consent to participate was then obtained from the parents and adolescents who were 16 years and above, while assent was obtained from adolescents who were less than 16 years of age. Permission was obtained from the heads of the selected schools.
: Not applicable.
: The authors declare that they have no competing interests.