Wang, Jing
Wang, Chao
Su, Tao
Article History
Received: 19 December 2023
Accepted: 18 June 2024
First Online: 24 June 2024
Declarations
:
: Ethics approval and consent to participate this study was performed in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of the International Peace Maternity and Child Health Hospital in Shanghai. The requirement for informed consent was waived by the Ethics Committee of the International Peace Maternity and Child Health Hospital in Shanghai because of the retrospective nature of the study.
: Not applicable.
: The authors declare no competing interests.