Funding for this research was provided by:
Tehran University of Medical Sciences and Health Services (IR.TUMS.VCR.REC.1396.4018)
Received: 6 February 2020
Accepted: 15 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: The ethics committee of Tehran University of Medical Sciences (IR.TUMS.VCR.REC.1396.4018) approved the study.
: Not applicable.
: The authors declare that they have no competing interests.