Received: 19 February 2020
Accepted: 8 June 2020
First Online: 18 June 2020
Ethics approval and consent to participate
: All participants were informed about study confidentiality. Informed consent was obtained from all the participants and/or their parents; the study was approved by the ethics committee of Saveh University of Medical Sciences. The research ensures the protection of data, both during and after the completion of the research work.
: Not applicable.
: The authors declare that they have no competing interests.