Received: 8 September 2017
Accepted: 5 January 2018
First Online: 31 January 2018
Ethics approval and consent to participate
: The study was approved by the Institute Ethics Committee, and informed consent was obtained from each participant.
: The written informed consent was obtained from each patient enrolled in this study; the study was approved by the Institute Ethics Committee.
: The authors declare that there are no competing interests.
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