Received: 9 February 2018
Accepted: 10 October 2018
First Online: 6 December 2018
Ethics approval and consent to participate
: An Ethical approval was obtained from Ethical Review Committee of Bahir Dar University College of Medicine and Health Science School of Public Health. Verbal consent was received from the study participants after explaining the study objectives and procedures and their right to refuse to participate in the study at any time they want. Names of the participants were kept anonymous by using study record number only.
: Not applicable.
: The authors declare that they have no competing interests.
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