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Article History

Received: 30 August 2019

Accepted: 17 February 2020

First Online: 18 March 2020

Ethics approval and consent to participate

: This study approved by research ethics committee of Falavarjan Branch, Islamic Azad University (Approval Number: 301/28399). The study was carried out in accordance with the declaration of Helsinki, including, but not limited to, there being no potential harm to participants, that the anonymity of participants was guaranteed, and that written informed consent of participants was obtained.

: “Not applicable”.

: The authors declare that they have no competing interests.