Received: 2 November 2018
Accepted: 26 December 2018
First Online: 22 January 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board of the University of Gondar (ref. number: IPH/295/2017). Then, an official letter from the University of Gondar Research and Community Service Vice President and supportive letter from Institute of public health college of Medicine and Health Sciences was written to the respective responsible bodies. Confidentiality of the data was maintained. No identifiers except coding were included in the data collection tools.
: This manuscript does not contain any individual person’s data.
: The authors declare that they have no competing interests.
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