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Authors
Chu, Lanlan https://orcid.org/0000-0001-8557-5839
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Article History
Accepted: 5 January 2023
First Online: 26 January 2023
Declarations
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: The author has no relevant financial or non-financial interests to disclose.
: The CLHLS study was approved by the Research Ethics Committee of Peking University (IRB00001052–13074), and all participants or their proxy respondents provided written informed consent.
: All analysis sample is downloaded from the CLHLS public-use data files. This study does not use any sensitive health data and restricted data. Thus, this study did not apply for approval from the Ethics Committees in the present institution.
: All investigations on human subjects have included a statement that the subject gave informed consent, and patient anonymity should be preserved.
