Funding for this research was provided by:
Kermanshah University of Medical Sciences (95579)
Received: 2 March 2019
Accepted: 24 July 2019
First Online: 15 August 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of Kermanshah University of Medical Sciences (kums.rec.1395.563) and participants provided written informed consent for participation in this study.
: Not applicable.
: The authors declare that they have no competing interests.