Received: 18 December 2018
Accepted: 11 March 2019
First Online: 3 May 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from Addis Ababa University, College of Heath Science and supportive letter was secured from West Gojjam Zonal Health Department Office. Written assent was obtained from the care givers of each participant after brief explanation about the scope and objectives of the study prior to the interview. Personal identifiers such as name and phone numbers of the study participants never been recorded for the purpose of anonymity. The collected information was kept confidential and used only for the purpose of study.
: Not applicable.
: The authors declare that they have no competing interests.
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