Received: 5 December 2018
Accepted: 9 July 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: Participation was voluntary for all the selected surgical patients. Before the interview, the interviewer explained in detail the content of the questionnaire, informed the participants on confidentiality of their responses and of their free choice to withdraw from the study during the interview or later. A written consent was obtained from all participants. The study was approved by the Institutional Review Board of the College of Health Sciences of the University of Mekelle (No: ERC 06113/2016).
: Not applicable.
: The authors declare that they have no competing interests.