Article History
Received: 1 May 2019
Accepted: 10 December 2019
First Online: 18 December 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board (IRB) of Mizan-Tepi University. Also, informed written consent was obtained from all participants after explaining the purpose of the study, importance of their contribution as well as the right to refuse participation. All the information gathered was kept confidential.
: Not applicable.
: All authors declare that they have no competing interest.