Received: 11 November 2019
Accepted: 20 December 2019
First Online: 2 January 2020
Ethics approval and consent to participate
: Before study initiation, ethical clearance of Wollo University Ethical Board was obtained. An official letter from Wollo University explaining the purpose of the study was submitted to the hospital administration and support of the administration is obtained before pursuing the study.
: Not applicable.
: The authors declare that they have no competing of interests.