Received: 1 July 2017
Accepted: 17 September 2018
First Online: 25 September 2018
Ethics approval and consent to participate
: The study was approved by the Institutional Research Review Board of Mekelle University-college of health science. An official permission was also secured to Tigray regional health bureau. Then a permission and support letter was written to the health office of Aksum town. Respondents have informed the purpose of the study then information was collected after obtaining verbal and written parental informed consent in each participant. Information was recorded anonymously and confidentiality was assured throughout the study period.
: Not applicable.
: The authors declare that they have no competing interests.
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