Funding for this research was provided by:
National Natural Science Foundation of China (81571819, 81500766)
Natural Science Foundation of Zhejiang Province (LQ19H120011)
Program of Zhejiang Medical Technology (2019328715)
Text and Data Mining valid from 2019-04-24
Received: 28 January 2019
Accepted: 5 April 2019
First Online: 24 April 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of the Second Affiliated Hospital, Zhejiang University School of Medicine, and the research followed the tenets of the Declaration of Helsinki. Written consent was obtained from all patients and controls.
: Not applicable.
: The authors declare that they have no competing interests.
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