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Authors
Li, Mingxi
Gong, Weijun
Wang, Shidong
Li, Zhe
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Article History
Received: 15 February 2022
Accepted: 26 December 2022
First Online: 29 December 2022
Declarations
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: Approval was obtained from the National Center for Health Statistics Research Ethics Review Board, and all participants provided written informed consent (Approval number: Protocol#98–12 and Protocol #2005–06, ExternalRef removed).
: Not applicable.
: The authors declare that they have no competing interests.
