About the Authors

Seung Mi Lee

Affiliations Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Jeong Woo Park

Affiliations Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics and Gynecology, Inje University College of Medicine, Ilsan-Paik Hospital, Gyeonggi, Korea

Byoung Jae Kim

Affiliations Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea, Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Chan-Wook Park

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

Joong Shin Park

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

Jong Kwan Jun

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

Bo Hyun Yoon

yoonbh@snu.ac.kr

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SML BHY. Performed the experiments: SML JWP BJK CWP JSP JKJ BHY. Analyzed the data: SML JWP BJK CWP BHY. Contributed reagents/materials/analysis tools: SML JWP BJK CWP BHY. Wrote the paper: SML BHY.