Received: 5 February 2020
Accepted: 29 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the ethical review board of Addis Ababa University. Written consent was obtained from the study participants. Confidentiality and privacy were maintained during data collection, analysis, and reporting.
: Not applicable.
: The authors declare that they have no competing interests.