Tang, Powei
Chen, Xiaohong
Xiao, Fei
Hu, Yilin
Hao, Jindou
Tian, Jia
Liu, Wanqu
Zhang, Yu
Liu, Peihui
Article History
Received: 15 April 2024
Accepted: 18 May 2026
First Online: 22 May 2026
Declarations
:
: This study was approved by the ethics committee of Shenzhen Maternal and Child Health Hospital (approval No.: LLYJ2021-049-018). The requirement for informed consent was waived by the Institutional Review Board of Shenzhen Maternal and Child Health Hospital because of the retrospective nature of the study, which relies solely on microbiological monitoring data obtained from samples collected during ongoing medical activities. I confirm that all methods were performed in accordance with the relevant guidelines. All procedures were performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Not applicable.
: The authors declare no competing interests.