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Authors
Chen, Congcong
Wu, Zixiang
Wu, Ziheng
Wu, Chuanqiang
Wang, Qi
Zhan, Tianwei
Dong, Lingjun
Fang, Shuai
Wu, Ming
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Article History
Received: 10 February 2021
Accepted: 21 May 2021
First Online: 4 June 2021
Declarations
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: This research was conducted ethically in accordance with the World Medical Association Declaration of Helsinki and was approved by the Ethics Committee of the Second Affiliated Hospital of Zhejiang University (ID: No. 2021–0486). The waiver for the informed consent was obtained from the Second Affiliated Hospital of Zhejiang University ethics committee given the retrospective nature of the study. A data use agreement was received form from the SEER administration.
: Not applicable.
: The authors declare that they have no competing interests.
