Funding for this research was provided by:
Kermanshah University of Medical Sciences (90099)
Text and Data Mining valid from 2018-04-17
Received: 20 March 2017
Accepted: 21 March 2018
First Online: 17 April 2018
Ethics approval and consent to participate
: The study was approved by ethics committee of Kermanshah University of Medical Sciences with reference number ir.kums.rec.1396.710. Written consent was obtained from participants.
: Not applicable
: The authors declare there are no competing interests.
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