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Authors
Chen, Limin
Shao, Hui
Zhang, Jianwei
Wu, Ruoya
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Article History
Received: 8 May 2025
Accepted: 12 September 2025
First Online: 17 October 2025
Declarations
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: This retrospective study was approved by the Ethics Committee of Shaoxing Maternal and Child Health Hospital in December 2024,the ethical approval number is [IRB-AF/37 − 2.0]. And it did not involve animal or human clinical trials. And data collection was based on complete medical records and data analysis was performed anonymously. The ethics committee waived the requirement for informed consent.All our research methods were in accordance with relevant guidelines and regulations.
: The authors declare no competing interests.
