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Article History

Received: 2 August 2017

Accepted: 20 August 2018

First Online: 31 August 2018

Ethics approval and consent to participate

: The study procedure was approved by the Medical Ethics Committee of Zanjan University of Medical Sciences [NO: ZUMS.REC.1395.277]. This study involved only participants who gave their informed consent. For this, verbal informed consent was obtained from all participants before beginning the interviews, and all participants completed informed written consent after being informed about the purposes of the project. There is no private data that can be related the answers with any of the participants in present study. To protect the rights and interests of all participants, no records by name were maintained.

: Not applicable.

: The authors declare that they have no competing interests.

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