Text and Data Mining valid from 2020-03-19
Received: 5 June 2019
Accepted: 9 March 2020
First Online: 19 March 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the University of Gondar (IRB reference No: <b>V/P/RCS/05/361/2019</b>). Written informed consent was gotten from study participants. Support letters were obtained from university of Gondar referral hospital clinical director office. All the information was kept confidential and no individual identifiers were collected.
: Not applicable.
: The authors declare that they have no any conflict of interest.