Funding for this research was provided by:
Zhejiang Provincial Natural Science Foundation (LQ17H010002, LY16H010004, LY18H170001)
Zhejiang Provincial Department of Education (Y201635465)
Text and Data Mining valid from 2019-05-27
Received: 28 November 2018
Accepted: 29 April 2019
First Online: 27 May 2019
Ethics approval and consent to participate
: This research project was approved by Ethics Committee of the 2nd Affiliated Hospital, School of Medicine, Zhejiang University. In this study, written informed consent was obtained from the patients or their families, and patient anonymity was preserved.
: Not applicable.
: The authors declare that they have no competing interests.
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