Funding for this research was provided by:
Deputy for Research and Technology, Kermanshah University of Medical Sciences (91048)
Received: 14 July 2019
Accepted: 31 July 2019
First Online: 6 August 2019
Ethics approval and consent to participate
: The study was approved by research ethics committee of Kermanshah University of Medical Sciences. The written informed consent was obtained from all the participants.
: Not applicable.
: The authors declare that they have no competing interests.