About the Authors

Xing Wei

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Shaohua Zhang

Affiliation Department of Gynecology and Obstetrics, The Affiliated Hospital of Xi’an Medical College, Xi’an 710077, China

Di Cao

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Minyi Zhao

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Qian Zhang

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Juan Zhao

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Ting Yang

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Meili Pei

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Li Wang

Affiliation Center of Maternal and Child Health Care, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Yang Li

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Xiaofeng Yang

yxf73@163.com

Affiliation Department of Gynecology and Obstetrics, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XW XFY. Performed the experiments: XW SHZ DC MYZ QZ JZ TY MLP LW YL XFY. Analyzed the data: XW SHZ XFY. Contributed reagents/materials/analysis tools: XFY. Wrote the paper: XW XFY.