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Authors
Xiao-Ya, Xu
Liang-Fen, Zhang
Li-Li, Ma
Wei, Wei
Meng-Meng, Li
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Article History
Received: 22 April 2026
Accepted: 8 July 2026
First Online: 11 July 2026
Declarations
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: This study was approved by the Ethics Committee of Haidian District Maternal and Child Health Care Hospital (No. 2025LW-27, approval date, December 8, 2025). The studies were conducted in accordance with the Declaration of Helsinki, the local legislation and institutional requirements. The requirement for written informed consent was waived by the Ethics Committee of Haidian District Maternal and Child Health Care Hospital in accordance with the principles of the Declaration of Helsinki due to the retrospective nature of the analysis.
: This study was approved by the Ethics Committee of Haidian District Maternal and Child Health Care Hospital (No. 2025LW-27, approval date, December 8, 2025). Due to the retrospective nature of the study and the use of anonymized clinical data, the requirement for informed consent was waived by the ethics committee.
: Not applicable.
: The authors declare no competing interests.
