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Authors
Lu, Huilan
Ma, Hongran
Dong, Jiyuan
Wang, Jiancheng
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (72264002)
Fundamental Research Funds for the Central Universities, Lanzhou University, China (lzujbky-2022-44)
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Article History
Received: 30 April 2024
Revised: 16 November 2024
Accepted: 24 December 2024
First Online: 8 March 2025
Declarations
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: Our study protocol was approved by the Institutional Review Board at the School of Public Health, Lanzhou University (NO. IRB2409020), with a waiver of informed consent because all data were aggregated at the city level, and no subjects were contacted.
: Not applicable.
: The authors declare that they have no competing interests.
