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Article History

Received: 1 December 2020

Accepted: 15 January 2021

First Online: 11 February 2021

Ethics approval and consent to participate

: The research review ethical committee of the Addis Ababa University approved this research in accordance with the proclamation No 603/2008′ of National Research Ethics Review Guideline (approval no.312/MSC/91/08), and permission letter was obtained from Bahir Dar city mayor’s office (permission letter no.6579/04). Informed written consent was taken from all participants or the families/guardians when the participants were less than 18 years of age. All the participants’ information was held confidential by locking with keys in the boxes and passwords in computers to avoid access to the third person. Moreover, personal identifiers were not included in the questionnaire.

: Not applicable.

: The authors declare that they have no competing interests.