Document is current
Any future updates will be listed below
-
Authors
Wu, Jiang-Nan https://orcid.org/0000-0003-4378-2391
Ren, Yun-Yun
Zhu, Chen
Peng, Ting
Zhang, Bin
Li, Ming-Qing
- License Information
-
More Information
Article History
Received: 19 June 2020
Accepted: 5 April 2021
First Online: 17 April 2021
Declarations
:
: The study was approved by the Ethics Committee of the Obstetrics and Gynecology Hospital of Fudan University (No. 2017–35, 2017–35-C1) and was conducted in accordance with Chinese law and the Guidelines of the National Human Biomedical Research Policies. No informed consent was obtained from the patients because the study was retrospective. Administrative permissions for the data were acquired by the authors for research purposes.
: Not applicable.
: The authors declare that they have no competing interests.
