Zeng, Hongmin
Dai, Qianling
Jiang, Dan
Article History
Received: 11 July 2023
Accepted: 16 October 2023
First Online: 24 October 2023
Declarations
:
: This study was conducted in accordance with the ethical principles embodied in the Declaration of Helsinki and was approved by the Ethics Committee of Chengdu Women’s and Children’s Central Hospital (reference number 2023(41)). The requirement for the acquisition of informed consent from participants was waived owing to the retrospective nature of the data.
: Not applicable.
: The authors declare no competing interests.