Text and Data Mining valid from 2019-05-15
Received: 12 July 2017
Accepted: 30 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the ethical review board of Debretabor University and the supporting letter was written to South Gondar Zone and Farta district health bureau. Both written and verbal informed consent was obtained from each study participants after explained the purpose and objective of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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