Text and Data Mining valid from 2018-04-05
Received: 19 July 2017
Accepted: 23 March 2018
First Online: 5 April 2018
Ethics approval and consent to participate
: Ethical clearance was obtained from Institutional Ethical Review Board of Debre Berhan University, college of Medicine and Health Sciences. Approval from each department was taken before proceeding to data collection. Written consent was obtained from each study participants and data was kept confidential.
: Not applicable.
: The authors declare that they have no competing interests.
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