About the Authors
- Jin Liu
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Affiliation Beijing Obstetrics & Gynecology Hospital, Capital Medical University, Beijing, China
- Wei Zhang
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* E-mail: zw2966@sina.com
Affiliation Beijing Obstetrics & 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: WZ. Performed the experiments: JL. Analyzed the data: WZ JL. Wrote the paper: WZ JL.