About the Authors

Jing Zhang

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Ying Liu

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Xiaofang Liu

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Liangzhi Xu

liangzxu@aliyun.com

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Lingling Zhou

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Liulin Tang

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Jing Zhuang

Affiliation Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Wenqi Guo

Affiliation Department of Ultrasound, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Rong Hu

Affiliation Clinical Laboratory center, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: J. Zhang YL XL LX. Performed the experiments: J. Zhuang YL XL LZ LT WG RH. Analyzed the data: J. Zhang YL. Contributed reagents/materials/analysis tools: WG RH. Wrote the paper: J. Zhang LX.