Weight gain during twin pregnancy with favorable pregnancy outcomes in Japan: A retrospective investigation for new criteria based on perinatal registry data

• Soichiro Obata ,

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Writing – original draft, Writing – review & editing

  * E-mail: soobata@yokohama-cu.ac.jp

  Affiliation Perinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan

  https://orcid.org/0000-0002-4107-0844

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• Mai Shimura,

  Roles Conceptualization, Investigation, Writing – original draft

  Affiliation Perinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan

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• Toshihiro Misumi,

  Roles Formal analysis, Supervision

  Affiliation Department of Biostatistics, Yokohama City University School of Medicine, Yokohama, Japan

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• Sayuri Nakanishi,

  Roles Data curation

  Affiliation Perinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan

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• Ryosuke Shindo,

  Roles Data curation

  Affiliation Perinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan

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• Etsuko Miyagi,

  Roles Supervision

  Affiliation Department of Obstetrics and Gynecology, Yokohama City University Hospital, Yokohama, Japan

  https://orcid.org/0000-0002-5492-0844

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• Shigeru Aoki

  Roles Supervision, Writing – original draft

  Affiliation Perinatal Center for Maternity and Neonates, Yokohama City University Medical Center, Yokohama, Japan

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