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Authors
He, Nan
Xu, Xiangchun
Wang, Haocheng
He, Feiying
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Funding
Funding for this research was provided by:
the 13th Five-Year Plan of Guangdong Province for Philosophy and Social Sciences (GD20XGL42)
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Article History
Received: 9 June 2025
Accepted: 10 October 2025
First Online: 17 November 2025
Declarations
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: The authors declare no competing interests.
: All respondents gave informed written consent prior to the interview, and ethical approval for the collection of human subject data was obtained, which was updated annually at the Peking University Institutional Review Board (IRB00001052-11015). No additional ethical approval is required for approved data users. All methods of this study were performed in accordance with the guidelines of the Declaration of Helsinki.
