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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (No.11701021)
National Statistical Science Research Project (No.2022LZ22)
Science and Technology Program of Beijing Education Commission (No.KM202110005013, No.72371241, No.11971001)
National Social Science Fund of China (No.23 &ZD127)
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Article History
Received: 5 September 2023
Accepted: 4 July 2024
First Online: 26 July 2024
Declarations
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: No Conflict of interest nor Conflict of interest.
