Received: 4 December 2018
Accepted: 5 June 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Research Ethical Review Committee of Bahir Dar University. Permission and supporting letters were taken from respective office before data collection. Written consent was also obtained from all respondents.
: Not applicable.
: The authors declare that they have no competing interests.