Text and Data Mining valid from 2019-08-20
Received: 22 March 2019
Accepted: 6 August 2019
First Online: 20 August 2019
Ethics approval and consent to participate
: The study was approved by research ethics committee of Kermanshah University of medical sciences.
: All the authors and the Kermanshah University of Medical Sciences consented to publish the study in your journal.
: The authors declare that they have no competing interests.