Text and Data Mining valid from 2020-01-03
Received: 29 December 2018
Accepted: 26 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: The ethics committee of the Tarbiat Modares University approved the study. (approval no: IR.TMU.REC.1394.265). In addition to this, we obtained permission from the hospital authorities. Participants were informed of the goals of the study and we also obtained written informed consent from all participants. Participants were made certain that their name and information would be kept confidential and they were told that they were free to not complete the questionnaire if they did not desire to do so.
: Not applicable.
: The authors declare that they have no competing interests.