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Authors
Bian, Hege
Zhang, Yuzhong
Liu, Kun
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Article History
Received: 22 April 2025
Accepted: 28 August 2025
First Online: 1 September 2025
Declarations
:
: The authors declare no competing interests.
: The study was conducted in accordance with the Declaration of Helsinki and approved by the National Center for Health Statistics Ethics Review Board (Protocol #2011-07 and Continuation of Protocol #2011-07). Informed consent was obtained from all participants involved in the study.
