Funding for this research was provided by:
Text and Data Mining valid from 2018-08-01
Received: 6 November 2017
Accepted: 20 June 2018
First Online: 1 August 2018
Ethics approval and consent to participate
: Ethical clearance was obtained from Ethical Review Committee of Jimma University College of public health and medical science ethical committee.
: Not applicable, no individual detail is presented.
: All authors have no competing interest and declare that this study is original article.
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