Funding for this research was provided by:
National Natural Science Foundation of China (81602253, 81672546)
Text and Data Mining valid from 2018-11-12
Received: 20 July 2018
Accepted: 28 September 2018
First Online: 12 November 2018
Ethics approval and consent to participate
: This study was approved by the ethics committee of the Peking University First Hospital and written informed consents were obtained before any operation to patients. Consent for publication The authors confirmed that we have obtained written consent from the patients to publish this manuscript.
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