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Authors
Li, Dan
Yang, Jinjuan
Zhu, Liang
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Article History
Received: 12 September 2023
Accepted: 30 August 2024
First Online: 12 October 2024
Declarations
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: The CPFS 2020 has got the approval for interviewing respondents by the Biomedical Ethics Review Committee of Peking University, and the informed consent was required to sign by the participants (available online: http://www.isss.pku.edu.cn/cfps/). The study methodology was carried out in accordance with approved guidelines.
: Not applicable.
: The authors declare that they have no competing interests.
