Article History
Received: 29 August 2019
Accepted: 9 January 2020
First Online: 20 January 2020
Ethics approval and consent to participate
: This research was approved by the review committee of Debre Berhan University, College of Health Sciences. Permission to conduct the study was obtained from each school administrators. Consent and assent and written consent from the parents (for participants younger than 18 years old) was obtained from the study participants and anonymity and confidentiality of the data were maintained throughout the data collection process. All participants were informed that they have the right to refuse participating in the study at any time.
: Not Applicable.
: The authors declared that they have no competing interests.