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Authors
Lin, Guanfeng
Wang, Shengru
Yang, Yang
Su, Zhe
Du, You
Xu, Xiaolin
Chai, Xiran
Wang, Yipeng
Yu, Bin
Zhang, Jianguo
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Article History
Received: 8 October 2020
Accepted: 4 December 2020
First Online: 10 February 2021
Ethics approval and consent to participate
: Approval for the study was obtained from the ethics committee at Peking Union Medical College Hospital. Due to the retrospective nature of the study, exemption of informed consent was granted by the ethics committee at Peking Union Medical College Hospital. The authors confirmed that all methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
