Song, Zhimin
Cheng, Yan
Li, Tingting
Fan, Yongfang
Zhang, Qingying
Cheng, Haidong
Funding for this research was provided by:
National Natural Science Foundation of China (81871184, 81871184, 81871184, 81871184, 81871184, 81871184)
Article History
Received: 22 December 2021
Accepted: 21 March 2022
First Online: 6 April 2022
Declarations
:
: All procedures in this study were approved by the Human Research Ethics Committee of the Obstetrics and Gynecology Hospital, Fudan University [2015] (grant no. 41). All methods were performed in accordance with the approved guidelines and regulations. All participants gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.