Funding for this research was provided by:
Mazandaran University of Medical Sciences (97-3008)
Article History
Received: 21 January 2020
Accepted: 2 July 2020
First Online: 13 July 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Mazandaran University of Medical Sciences and complied with the guidelines and principles of the Declaration. All participants signed written informed consent.
: Not Applicable.
: The authors declare that they have no competing interests.