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Authors
Chen, Xingxing
Fu, Liying
Zhu, Zhongxin
Wang, Yunchao
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Article History
Received: 11 January 2024
Accepted: 7 May 2024
First Online: 10 May 2024
Declarations
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: The studies involving human participants were reviewed and approved by CDC’s National Center for Health Statistics Institutional Research Ethics Review Board. The patients/participants provided their written informed consent to participate in this study. All our methods followed the guidelines of the Helsinki Declaration. And secondary analysis does not require additional institutional review committee approval.
: Not applicable.
: The authors declare no competing interests.
