Received: 28 July 2020
Accepted: 23 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: Written informed consent was obtained from all the participants. The protocol for this study was approved by the ethics committee of Shiraz University of Medical Sciences (IR.SUMS.REC.1398.1423). A comprehensive description about the study was introduced to the participants; they were allowed to reject answering or withdrawing at any time thereafter. The participants were assured that their answers would be kept confidential and that their names would not be disclosed during the study and in the final report.
: <b>Not applicable.</b>
: The authors declare that they have no competing interests.