Text and Data Mining valid from 2018-05-11
Received: 9 December 2017
Accepted: 7 May 2018
First Online: 11 May 2018
Ethics approval and consent to participate
: Ethical clearance was obtained from the Health Research Ethics Review Committee (HRERC) of the University of Gondar. As some study participants are children (under 16 years of age), consent to participate was collected from the parents/guardians. The study proposal was approved by the ethical clearance review committee of the University of Gondar. Written consent was obtained from each study subject. Participants were told the objective of the study and their rights to refuse filling the questionnaires. Any information that was obtained during the study was kept confidential.
: The authors declare that they have no competing interests.
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