Funding for this research was provided by:
National Natural Science Foundation of China (81501439, 81471628)
Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine. (14YJ1)
Text and Data Mining valid from 2018-08-30
Received: 16 January 2018
Accepted: 16 August 2018
First Online: 30 August 2018
Ethics approval and consent to participate
: This retrospective study was approved by the institutional review board of Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, China. The informed consent requirement was waived. The ethics committee’s reference number was XHEC-D-2018-003.
: Not applicable.
: The authors declare that they have no competing interests.
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