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Authors
Bao, Min
Ma, Rongji
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Article History
Received: 22 August 2024
Accepted: 18 November 2024
First Online: 24 December 2024
Declarations
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: The study was approved by the Ethics Review Committee of Peking University, and all CHARLS participants provided written informed consent. All methods were carried out by the principle embodied in the Declaration of Helsinki.
: Not applicable.
: The authors declare no competing interests.
