Text and Data Mining valid from 2019-02-15
Received: 29 January 2018
Accepted: 28 January 2019
First Online: 15 February 2019
Ethics approval and consent to participate
: This study was approved by the Institutional review board of University of Gondar. Informed written consent was obtained from each participant before starting the interview and participants were also told their right to stop the interview at anytime.
: Not applicable.
: The authors declare that they have no competing interests.
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