Funding for this research was provided by:
Vice chancellor for research, Shahid Beheshti University of Medical Sciences. (IR.SBMU.MSP.REC.1396.230)
Received: 6 March 2020
Accepted: 26 January 2021
First Online: 3 February 2021
Ethics approval and consent to participate
: This study has been approved by Shahid Beheshti University of Medical Sciences’ ethical community with the following code: IR.SBMU.MSP.REC.1396.230 and written consent was acquired from candidates and they were allowed to leave the study any time that they wanted. The authors of the present study are committed to CONSORT guidelines in reporting the results.
: Not applicable.