About the Authors

Jee Hyun Kim

Contributed equally to this work with: Jee Hyun Kim, Seung Mi Lee

Affiliation Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea

Seung Mi Lee

Contributed equally to this work with: Jee Hyun Kim, Seung Mi Lee

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Ji-Hyun Lee

Affiliation Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea

Yu Ri Jo

Affiliation Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea

Min Hoan Moon

Affiliation Department of Diagnostic Radiology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Jonghwan Shin

Affiliation Department of Emergency Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Byoung Jae Kim

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Kyu Ri Hwang

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Taek Sang Lee

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Kwang Bum Bai

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Hye Won Jeon

jshmom04@gmail.com

Affiliation Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HWJ BJK KRH TSL KBB. Performed the experiments: JHK SML JHL YRJ. Analyzed the data: JHK SML MHM JHS. Wrote the paper: JHK SML.