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Authors
Han, Xinjun
Wu, Xinru
Wang, Shuhui
Xu, Lixue
Xu, Hui
Zheng, Dandan
Yu, Niange
Hong, Yanjie
Yu, Zhixuan
Yang, Dawei
Yang, Zhenghan https://orcid.org/0000-0003-3986-1732
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (62171298)
National Natural Science Foundation of China (61871276)
National Natural Science Foundation of China (82071876)
Beijing Municipal Health Commission, Special Program of Scientific Research on health development in Beijing (grants shoufa 2018-2-2023)
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Article History
Received: 29 October 2021
Accepted: 24 January 2022
First Online: 24 February 2022
Declarations
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: The study was approved by local ethical committee and written informed consent was waived due to the retrospective nature of the study.
: The selected pictures of sample cases have personal consent form of each patient.
: The authors declare that they have no competing interests.
