Feng, Li
Sun, Lijuan
Wang, Jingjing
Sun, Congxin
Lu, Lijuan
Zhang, Zhikun
Hu, Yu
Wu, Qingqing
Funding for this research was provided by:
National Natural Science Foundation of China (81971619)
Article History
Received: 17 June 2022
Accepted: 28 September 2022
First Online: 10 October 2022
Declarations
:
: The study was approved by our Ethics Committee of Beijing Obstetrics and Gynecology Hospital, Capital Medical University (Ethics approval number:2019-KY-106–01), and all pregnant women and their legal guardians were informed in detail and signed informed consent to voluntarily participate in this study. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The author declare that they do not have any competing interests.