Funding for this research was provided by:
Iran University of Medical Science
Received: 25 April 2020
Accepted: 16 December 2020
First Online: 5 January 2021
Ethics approval and consent to participate
: The research project was confirmed by the Ethics Committee of Iran University of Medical Sciences, Tehran, Iran, with the ethics code of IR.IUMS.REC 1395. 9311373008. After obtaining a sampling license from Iran University of Medical Sciences. The participants were asked to sign a written informed consent. Respondents were completely informed of the study purpose and procedures. Besides, they were assured of the confidentiality of information.
: Not applicable.
: The authors declare that they have no competing interests.