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Article History

Received: 14 September 2019

Accepted: 25 August 2020

First Online: 31 August 2020

Ethics approval and consent to participate

: The study was approved by the Ethics Committee of the Hamadan University of Medical Sciences (IR.UMSHA.REC.1397.745). Additionally, the researchers clearly stated objectives, methods and privacy and confidentiality of study for the participants. Finally, as clear in the first page of the questionnaire, a written informed consent was obtained from participants before filling out the questionnaire (Appendix). This consent is documented by the signature of the participant. To increase privacy and confidentiality of participants, we did not include identifying information such as age, education level, job and residence. This written informed consent for people under 16 years old obtained from their parents (including father or mother).

: Not applicable.

: The authors have no conflict of interest.