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Authors
Chen, Huan
Fan, Xiaolan
Zhang, Bei
Wang, Jinlian
Liao, Wenbo
Fu, Jin
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Article History
Received: 21 March 2025
Accepted: 6 March 2026
First Online: 16 March 2026
Declarations
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: The retrospective study was approved by the Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University (NO: EC-20250312). Due to the data being de-identified from a retrospective study, the informed consent requirement was waived. This study was conducted in accordance with the Declaration of Helsinki. All data collected during the study was kept strictly confidential.
: Not applicable.
: The authors declare no competing interests.
