About the Authors

Jun Woo Jo

Contributed equally to this work with: Jun Woo Jo, Byung Chul Jee

Affiliations Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea, Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea, Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University Seoul, Korea

Byung Chul Jee

Contributed equally to this work with: Jun Woo Jo, Byung Chul Jee

Affiliations Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea, Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea

Chang Suk Suh

suhcs@snu.ac.kr

Affiliations Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea, Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea

Seok Hyun Kim

Affiliations Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JWJ BCJ CSS SHK. Performed the experiments: JWJ BCJ. Analyzed the data: JWJ BCJ CSS SHK. Contributed reagents/materials/analysis tools: JWJ. Wrote the paper: JWJ BCJ. Provided editorial assistance: BCJ.