Funding for this research was provided by:
Iran University of Medical Sciences
Received: 23 March 2018
Accepted: 17 May 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of Iran University of Medical Sciences, and informed consent was obtained from patients prior to their participation in the research.
: The authors declare that they have no competing interests.
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