Ma, Yan
Zhang, Qingxia
Shan, Zhenli
Chen, Yanting
Chen, Yan
Pan, Xiaoyu
Huang, Yiying
Article History
Received: 26 January 2024
Accepted: 25 June 2024
First Online: 3 July 2024
Declarations
:
: The study was approved by the Ethics Committee of Shanghai First Maternity and Infant Hospital (No. KS23312; date: 21/09/2023). The requirement for informed consent for data collection was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare no competing interests.