Received: 21 November 2018
Accepted: 26 April 2019
First Online: 14 May 2019
Ethics approval and conscent to participate
: Ethical clearance was obtained from Bahir Dar University, school of the nursing research committee. The objective and importance of the study were explained to the study participants. The study participant also anticipated benefits and risk, and right not to respond if they did not want to respond oo the study questions. Verbal consent was approved by ethical review board.
: It is not applicable.
: The authors declare that they have no competing of interest.
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