Feng, Zhan
Shen, Qijun
Li, Ying
Hu, Zhengyu
Funding for this research was provided by:
Department of Health of Zhejiang Province, China (No.2017KY051, No.2018KY582)
Department of Health of Zhejiang Province, China (No.2019KY551)
Article History
Received: 12 October 2018
Accepted: 31 January 2019
First Online: 6 February 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Institutional Review Board of First Affiliated Hospital of College of Medical Science, Zhejiang University, and the requirement for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interest.
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