Funding for this research was provided by:
National Natural Science Foundation of China (32300924)
Shandong Provincial Natural Science Foundation (ZR2024QC185)
Article History
Received: 27 March 2025
Accepted: 12 July 2025
First Online: 25 July 2025
Declarations
:
: All listed authors contributed to the work and read and approved the submitted manuscript, and all authors have no conflicts of interest to declare. This manuscript has not been previously published and has not been submitted for publication elsewhere. All respondents gave informed written consent before they were interviewed, and ethical approval for collecting data on human subjects was obtained and renewed annually at the Peking University Institutional Review Board (IRB00001052-11015). There is no need for additional ethics approval for the approved data users.