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Authors
Luo, Dian
Kuo, Wan-chin
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Article History
Received: 14 November 2023
Accepted: 7 July 2024
First Online: 30 July 2024
Declarations
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: Ethical approval of this study was obtained from the Institutional Review Board of University of Wisconsin-Madison. Ethical approval for all the CHARLS data was granted from the Institutional Review Board at Peking University.
: Not applicable.
: The authors declare no competing interests.
