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Article History

Received: 29 May 2019

Accepted: 3 October 2019

First Online: 29 October 2019

Ethics approval and consent to participate

: The study procedure was approved by the Medical Ethics Committee of Zanjan University of Medical Sciences [Grant Number: A-12-1081-7]. This study involved only persons who gave their informed consent. For this, verbal informed consent was obtained from all participants before starting this study, and all participants completed an informed consent form after being explained the study’s aims. The CAI was treated as private and nameless; there was no personal information that could link the answers with any of the participants in the present study. To protect the rights and interests of all participants, no records of consent by name were kept. Each completed questionnaire was given back to the investigator on the same day of data gathering.

: Not applicable.

: The authors declare that they have no competing interests. Besides, Maryam Khazaee-Pool as a member of the editorial board (Associate Editor) of BMC Public Health journal declare that she has no competing interests.