Funding for this research was provided by:
Deputy of Research and Technology Ministry of health and medical education Islamic Republic of IRAN
Received: 26 February 2020
Accepted: 29 October 2020
First Online: 13 November 2020
Ethics approval and consent to participate
: This study has been ethically approved by the ethics committee of Tehran University of Medical Sciences with registration code numbers of IR.TUMS.VCR.REC.1396.4265 and IR.TUMS.VCR.REC.1398.246. Before registration, all participants read and sign the written consent form. A copy of the signed consent form is given to the participant.
: Not Applicable.
: The authors declare that they have no conflict of interest.