The risk of preterm birth in vanishing twin: A multicenter prospective cohort study

• Ji Su Seong ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Writing – original draft

  ¶‡ These authors share first authorship on this work.

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

  ⨯
• You Jung Han ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Writing – review & editing

  ¶‡ These authors share first authorship on this work.

  Affiliation Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea

  ⨯
• Min Hyoung Kim,

  Roles Formal analysis, Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, MizMedi Hospital, Seoul, Korea

  ⨯
• Jae-Yoon Shim,

  Roles Formal analysis, Supervision, Writing – review & editing

  Affiliations Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea, Mirae & Heemang Obstetrics and Gynecology Clinic, Seoul, Korea

  ⨯
• Mi-Young Lee,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Soo-young Oh,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Joon Ho Lee,

  Roles Formal analysis, Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea

  ⨯
• Soo Hyun Kim,

  Roles Conceptualization, Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea

  ⨯
• Dong Hyun Cha,

  Roles Formal analysis, Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Korea

  ⨯
• Geum Joon Cho,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Han-Sung Kwon,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Byoung Jae Kim,

  Roles Formal analysis, Supervision, Writing – review & editing

  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

  ⨯
• Mi Hye Park,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Hee Young Cho,

  Roles Formal analysis, Supervision, Writing – review & editing

  Affiliation Department of Obstetrics and Gynecology, Bundang CHA Hospital, CHA University, Pocheon-si, Korea

  http://orcid.org/0000-0001-7064-5056

  ⨯
• Hyun Sun Ko,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Chan-Wook Park,

  Roles Formal analysis, Supervision, Writing – review & editing

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

  ⨯
• Joong Shin Park,

  Roles Data curation, Formal analysis, Investigation, Supervision, Writing – review & editing

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

  ⨯
• Jong Kwan Jun,

  Roles Formal analysis, Investigation, Methodology, Supervision, Writing – review & editing

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

  http://orcid.org/0000-0002-0242-1736

  ⨯
• Hyun Mee Ryu ,

  Contributed equally to this work with: Hyun Mee Ryu, Seung Mi Lee

  Roles Conceptualization, Data curation, Investigation, Methodology, Resources, Supervision, Visualization, Writing – review & editing

  * E-mail: smleemd@hanmail.net (SML); hmryu2012@naver.com (HMR)

  Affiliation Department of Obstetrics and Gynecology, Bundang CHA Hospital, CHA University, Pocheon-si, Korea

  ⨯
•  [ ... ],
• Seung Mi Lee

  Contributed equally to this work with: Hyun Mee Ryu, Seung Mi Lee

  Roles Conceptualization, Data curation, Investigation, Methodology, Resources, Supervision, Visualization, Writing – review & editing

  * E-mail: smleemd@hanmail.net (SML); hmryu2012@naver.com (HMR)

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

  http://orcid.org/0000-0002-2543-0408

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