Article History
Received: 10 August 2019
Accepted: 30 November 2020
First Online: 13 January 2021
Ethics approval and consent to participate
: The participants provided written, informed consent before the start of the study. The study was conducted in accordance with the Declaration of Helsinki and was approved by the research committee at the Islamic Azad University.
: Not applicable.
: The authors declare that they have no competing interests.