Article History
Received: 5 March 2018
Accepted: 11 April 2019
First Online: 25 April 2019
Ethics approval and consent to participate
: The study was approved by research ethics committee of Kermanshah University of Medical Sciences with the code IR.Kums.rec.1397.1058. The written informed consent was obtained from the participants.
: Not Applicable.
: The authors declare there are no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.