Funding for this research was provided by:
Mazandaran University of Medical Sciences
Received: 18 March 2020
Accepted: 13 July 2020
First Online: 28 July 2020
Ethics approval and consent to participate
: The ethical code of this study is IR.MAZUMS.REC.1397.004. The study has been approved by the Vice-Chancellor of Medical Ethics Committee of Mazandaran University of Medical Sciences on April 24, 2018. All participants signed the consent form before the study.
: Not applicable.
: The authors declare no competing interests.