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Article History

Received: 19 September 2017

Accepted: 14 March 2018

First Online: 21 March 2018

Ethics approval and consent to participate

: This study was approved by the ethics committee of Shahid Beheshti University of Medical Sciences, Tehran, Iran (IR.SBMU.RETECH.REC.1396.29). The written consent form was confirmed to be applied during data gathering by the ethics committee. Thus, all participants were required to sign the written consent form to take part in the study. Accordingly, the participants were informed about the confidentially of their names and other private information in the related reports and field notes. In addition, the participants were provided the possibility of leaving or declining their own interview session.

: Not applicable.

: The authors declare that they have no competing interests.

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