Text and Data Mining valid from 2019-02-21
Received: 22 August 2018
Accepted: 23 January 2019
First Online: 21 February 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board of Jimma University (reference No. RPGE/449/2016). Written or oral consent was obtained from participants after they were informed about the objective of the study and their right to withdraw from the study at any point. Anonymity and confidentiality were ensured by not using the real names of the participants. All guidelines of the Institutional Review Board of Jimma University were upheld.
: Not Applicable.
: The authors declare that they have no competing interests.
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