About the Authors

Li Chen

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Caixia Li

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Jing Guo

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Ning Luo

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Xiaoyan Qu

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Le Kang

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Mingmin Liu

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Zhongping Cheng

mdcheng18@263.net

Affiliations Department of Obstetrics and Gynaecology, Yangpu Hospital, Tongji University School of Medicine, Shanghai, PR China, Institute of Gynaecologic Minimally Invasive Medicine, Tongji University School of Medicine, Shanghai, PR China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: ZpC. Investigation: XyQ MmL LK. Resources: XyQ MmL LK. Writing – original draft: LC. Writing – review & editing: LC CxL JG NL XyQ LK MmL.