About the Authors

Chaoyang Sun

Contributed equally to this work with: Chaoyang Sun, Na Li, Dong Ding

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Na Li

Contributed equally to this work with: Chaoyang Sun, Na Li, Dong Ding

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Dong Ding

Contributed equally to this work with: Chaoyang Sun, Na Li, Dong Ding

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Danhui Weng

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Li Meng

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Gang Chen

gumpc@126.com (GC); dma@tjh.tjmu.edu.cn (DM)

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Ding Ma

gumpc@126.com (GC); dma@tjh.tjmu.edu.cn (DM)

Affiliation Department of Obstetrics and Gynaecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GC DM. Performed the experiments: NL. Analyzed the data: CYS DHW. Contributed reagents/materials/analysis tools: DD LM. Wrote the paper: CYS.