About the Authors

Eun-Saem Choi

Roles Conceptualization, Writing – original draft, Writing – review & editing

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

Hwasun Lee

Roles Methodology

Affiliation Department of Biostatistics, Korea University College of Medicine, Seoul, Korea

Se Jin Lee

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, School of Medicine Kangwon National University, Chuncheon-si, Gangwon-Do, Korea

Young Mi Jung

Roles Project administration

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

Ho Yeon Kim

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea

Seung Mi Lee

Roles Project administration

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

Kyung A. Lee

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Ewha Womans University School of Medicine, Seoul, Korea

Hyun-Joo Seol

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Kyung Hee University School of Medicine, Seoul, Korea

Hyun Sun Ko

Roles Project administration

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

Sung Hun Na

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, School of Medicine Kangwon National University, Chuncheon-si, Gangwon-Do, Korea

Dong Wook Kwak

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Ajou University School of Medicine, Suwon, Korea

Han-Sung Hwang

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea

Sooran Choi

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, College of Medicine, Inha University, Incheon, Korea

Soon-Cheol Hong

Roles Project administration

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

Hye-Sung Won

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea

Suk Young Kim

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Gachon University Gil Hospital, Incheon, South Korea

Hai-Joong Kim

Roles Project administration

Affiliation Department of Obstetrics and Gynecology, Kyung Hee University School of Medicine, Seoul, Korea

Ki Hoon Ahn

Roles Conceptualization, Methodology, Writing – review & editing

akh1220@hanmail.net

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

Competing Interests

The authors have declared that no competing interests exist.