About the Authors

Chun Ye

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Yan Ruan

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Liying Zou

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Guanghui Li

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Changdong Li

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Yi Chen

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Chaoxia Jia

Affiliation Department of public healthcare information administrative section, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Ian L. Megson

Affiliation Department of Diabetes & Cardiovascular Science, University of the Highlands & Islands, Inverness, United Kingdom

Jun Wei

Affiliation Department of Diabetes & Cardiovascular Science, University of the Highlands & Islands, Inverness, United Kingdom

Weiyuan Zhang

zhangwy9921@hotmail.com

Affiliation Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WYZ CY YR LYZ GHL CDL YC CXJ ILM JW. Performed the experiments: CY WYZ YR. Analyzed the data: CY WYZ YR JW. Contributed reagents/materials/analysis tools: CY WYZ YR ILM. Wrote the paper: CY WYZ YR.