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Authors
Sun, Jian
Yu, Shui
Lu, Wanjun
Liu, Yujiang
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Article History
Received: 14 March 2023
Accepted: 6 August 2023
First Online: 31 August 2023
Declarations
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: The China Health and Retirement Longitudinal Study has already obtained the ethical approval and informed consent, and was approved by research ethics committees of Peking University.
: Not applicable.
: The authors declare no competing interests.
