Funding for this research was provided by:
Hamadan University of Medical Sciences (9707174168)
Text and Data Mining valid from 2020-05-08
Received: 25 November 2019
Accepted: 30 April 2020
First Online: 8 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethical Committee of Hamadan University of Medical Sciences (approval code: IR.UMSHA.REC.1397.359). This study was an observational questionnaire study and the anonymous questionnaires were used to collect data. Therefore, the verbal informed consent was obtained from all participants prior to participation in the study and filling out the questionnaires. The form of consent was approved by the ethics committee.
: Not applicable.
: All authors declare that they have no competing interests.