Liu, Lu
Huang, Xixi
Xu, Chunfang
Chen, Chunqin
Zhao, Weijie
Li, Dajin
Li, Liping
Wang, Li
Du, Meirong
Funding for this research was provided by:
National Natural Science Foundation of China (31970859, 81630036, 91542116, 31570920)
National Outstanding Youth Science Fund Project of National Natural Science Foundation of China (81571510, 81871217)
Article History
Received: 20 November 2019
Accepted: 12 May 2020
First Online: 1 June 2020
Ethics approval and consent to participate
: The collection and use of human samples were approved by the Human Research Ethics Committee of the Obstetrics and Gynecology Hospital of Fudan University. All the participants signed informed consent. All methods were conducted in accordance with the approved guidelines.
: All authors agree with the submission and publication.
: The authors declare no conflict of interest.