Received: 16 October 2019
Accepted: 23 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: The project was ethically approved by the Research Ethical Review Board of Jimma University, Institute of health. Written informed consent was obtained from all participants. Confidentiality was kept and no personal identifiers were recorded.
: Not applicable.
: The authors have declared that they have no conflicts of interest.