Funding for this research was provided by:
the Natural Science Foundation of Liaoning Province (No.2015020506)
Text and Data Mining valid from 2018-10-29
Received: 5 December 2017
Accepted: 8 October 2018
First Online: 29 October 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the First Hospital of China Medical University. And informed consent was obtained from each subject.
: Consent for publication was obtained from each subject.
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