About the Authors

Xiaolin Cheng

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Xiaoyu Tian

tianxiaoyu816@163.com

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Zhen Yan

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Mengmeng Jia

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Jie Deng

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Ying Wang

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Dongmei Fan

Affiliation Department of Obstetrics and Gynecology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan Province, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XLC XYT. Performed the experiments: XLC ZY MMJ. Analyzed the data: XLC JD YW DMF. Contributed reagents/materials/analysis tools: XLC XYT. Wrote the paper: XLC XYT. Designed the tables used in analysis: DMF.