Article History
Received: 3 May 2026
Accepted: 21 July 2026
First Online: 28 July 2026
Declarations
Ethics approval and consent to participate: This study was approved by the ethics committee of International Peace Maternity and Child Health Hospital (IPMCH) [ethical committee number: GKLW-A-2026-010-01]. Due to the retrospective nature of the study, the requirement for informed consent was waived by the ethics committee. The study was registered with the Chinese Clinical Trial Registry ( showproj. html? proj = 310542) under the number ChiCTR2600119572 on February 06, 2026.
Consent for publication: Not applicable.
Competing interests: The authors declare no competing interests.