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Authors
Zhai, Jiliang
Guo, Shigong
Zhao, Yu
Li, Chunxu
Niu, Tong
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Article History
Received: 30 April 2021
Accepted: 22 July 2021
First Online: 17 August 2021
Declarations
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: The study was conducted in accordance with the Declaration of Helsinki and approved by the Ethical Committee of the Peking Union Medical College Hospital. No patients participated in this study and private information was protected.
: Not applicable.
: The authors declare that they have no competing interests except for the funding disclosed above.
