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Article History
Received: 28 April 2025
Accepted: 25 August 2025
First Online: 10 September 2025
Declarations
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: The study was approved by the Ethics Committee of PingXiang Maternal and Child Care (approval number: PX2020-032) and conducted in accordance with the principles of the Declaration of Helsinki. The requirement for informed consent was waived due to the retrospective nature of the study.
: All authors have read and approved the final version of the manuscript and consent to its submission for publication.
: The authors declare no competing interest
