Funding for this research was provided by:
Kermanshah University of Medical Sciences (97084)
Received: 9 May 2019
Accepted: 26 August 2019
First Online: 2 September 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of Kermanshah University of Medical Sciences (reference number: IR.KUMS.REC.1396.566).
: Not applicable.
: The authors declare that they have no competing interests.