Funding for this research was provided by:
the National Natural Scientific Foundation of China (NO. 31100643, 31570907, 81300301, 81572306, 81502403, XJZT12Z03)
Text and Data Mining valid from 2018-10-11
Received: 17 April 2018
Accepted: 27 September 2018
First Online: 11 October 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Xijing Hospital, and written informed consent was obtained from the patients in our center.
: Not Applicable.
: The authors declare that they have no competing interests.
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