Text and Data Mining valid from 2020-03-23
Received: 17 October 2019
Accepted: 10 March 2020
First Online: 23 March 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of Alborz University of Medical Sciences (Abzums.Rec.1395.5). Participation in this study was completely anonymous and based on written informed consent. To protect the rights of all participants, no records by name were maintained.
: Not applicable.
: The authors declare that they have no competing interests