Text and Data Mining valid from 2019-05-17
Received: 8 March 2019
Accepted: 14 May 2019
First Online: 17 May 2019
Ethics approval and consent to participate
: Ethical approval for this work was obtained from Ethical review board of University of Gondar. Permission letter was also secured from South Gondar Zonal health department and Simada District health office. In addition, written consent was obtained from study participants after providing a clear information about the overall objectives of the study.
: Not applicable.
: The authors declare that they have no competing interests.