Funding for this research was provided by:
National Natural Science Foundation of China (81771730)
Text and Data Mining valid from 2019-01-16
Received: 5 September 2018
Accepted: 4 January 2019
First Online: 16 January 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of Zhongshan Hospital Fudan University.
: Informed written consent was obtained from each patient.
: The authors declare that they have no competing interests.
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