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Authors
Xie, Yan
Zhang, Hanning
Li, Wenqi
Yan, Hui
Duan, Huilong
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Article History
Received: 18 March 2024
Accepted: 7 April 2025
First Online: 12 April 2025
Declarations
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: This study was determined to be non-human subjects research, patients were not involved in the design or conduct of the study, as it was part of routine program evaluation. The retrospective and anonymous nature of the study exempted it from the need for informed consent from the village clinics. The study was approved by Hainan provincial health commission statistical information center review board.
: Not applicable.
: The authors declare no competing interests.
