Funding for this research was provided by:
Received: 20 March 2020
Accepted: 21 July 2020
First Online: 28 July 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board (IRB) of Jimma University and written informed consent was obtained from the study participants.
: Not applicable.
: The authors declare that they have no competing interests.