Received: 17 January 2021
Accepted: 13 May 2021
First Online: 25 May 2021
: Shahid Beheshti University of Medical Sciences Ethics Committee approved the study with a waiver of informed consent (Reference number: IR.SBMU.RETECH.REC.1399.831). All data were de-identified prior to analysis.
: Not applicable.
: The authors declare that they have no competing interests associated with the material presented in this paper.