Funding for this research was provided by:
Zhejiang Medical Science and Technology Project (2017KY331)
Primary Research & Development Plan of Jiangsu Province (BE2017772)
Received: 19 April 2018
Accepted: 27 September 2018
First Online: 17 October 2018
: The authors declare that they have no competing interests.
: This retrospective single-center study was approved by the local institutional review board and written-informed consent was waived.
: Not applicable.
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