Text and Data Mining valid from 2019-09-23
Received: 17 April 2019
Accepted: 13 September 2019
First Online: 23 September 2019
Ethics approval and consent to participate
: This study was conducted after obtaining an ethical clearance letter from the institute review board (IRB) Debre Tabor University and informed written consent from chief executive officer of the hospital.
: Not applicable.
: The authors declare that they have no competing interests.