Received: 31 August 2019
Accepted: 19 June 2020
First Online: 29 June 2020
Ethics approval and consent to participate
: The authorities of three universities (Tarbiat Modares, Science and Technology, and Tehran University) after evaluating the study proposal gave consent and permission to collect the data. All participants gave their written informed consent to participate [Additional file InternalRef removed].
: Not applicable.
: The authors declare that they have no competing interests.