Text and Data Mining valid from 2019-08-19
Received: 1 October 2018
Accepted: 13 August 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from Wollega University College of medical and Health Science. An official letter of co-operation was written to Wollega University Nekemte, Shambu and Gimbi Campuses. Written informed consent was obtained from all participants and confidentiality of all the information was maintained through omitting personal identification. Data were used only for this research purpose.
: Not applicable.
: The authors declare that they have no competing interests.