About the Authors

Xin Zhou

cmu_zx@126.com

Affiliation Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Liaoning, Shenyang, China

Yang Gu

Affiliation Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Liaoning, Shenyang, China

Ding-ning Wang

Affiliation Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Liaoning, Shenyang, China

Sha Ni

Affiliation Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Liaoning, Shenyang, China

Jun Yan

Affiliation Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Liaoning, Shenyang, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Financial support: XZ. Final approval of manuscript: XZ. Conceived and designed the experiments: XZ. Performed the experiments: YG JY. Analyzed the data: DW SN. Contributed reagents/materials/analysis tools: DW SN. Wrote the paper: XZ YG.