Li, Yahong
Sun, Yun
Zhang, Xiaojuan
Wang, Xin
Yang, Peiying
Guan, Xianwei
Wang, Yan
Zhou, Xiaoyan
Hu, Ping
Jiang, Tao
Xu, Zhengfeng
Article History
Received: 19 April 2021
Accepted: 11 September 2021
First Online: 18 September 2021
Declarations
:
: This study was approved by Medical Ethics Committee of Nanjing Maternity and Child Health Care Hospital(Code number: [2018] NO.91). All participants signed informed consent before receiving amniocentesis, agreeing to use the remaining samples from clinical tests for scientific research. Therefore, this study did not re-sign the informed consent before the subsequent retrospective analysis, and informed consent was waived given the retrospective nature of our study. All methods were carried out in accordance with relevant guidelines and regulations under Ethics approval.
: Not applicable because there is no details, images, or videos related to an individual person.
: The authors declare that they have no competing interests.