About the Authors

Gang Wang

Roles Methodology, Writing – original draft

Affiliation Department of Gynecology, Shandong Provincial Western Hospital, Jinan, Shandong, China

Jian Lv

Roles Validation

Affiliation Department of Traditional Chinese Medicine, Shandong Provincial Western Hospital, Jinan, Shandong, China

Xiaoxin Qiu

Roles Validation

Affiliation Department of Obstetrics and Gynecology, Hunan Provincial People’s Hospital Xingsha Branch, Changsha, Hunan, China

Yujun An

Roles Investigation, Writing – review & editing

564433921@qq.com

Affiliation Department of Obstetrics and Gynecology, the No.4 Hospital of Jinan, Jinan, Shandong, China

Competing Interests

The authors have declared that no competing interests exist.