Maternal excessive weight gain as a potential risk factor for prolonged labor in Japanese pregnant women: The Japan Environment and Children’s Study

• Satoshi Shinohara ,

  Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: shinohara-bfnz@ych.pref.yamanashi.jp

  Affiliation Department of Obstetrics and Gynecology, Yamanashi Prefectural Central Hospital, Kofu, Yamanashi, Japan

  https://orcid.org/0000-0003-3124-1141

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• Sayaka Horiuchi,

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

  Affiliation Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan

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• Reiji Kojima,

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

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

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• Ryoji Shinohara,

  Roles Writing – original draft, Writing – review & editing

  Affiliation Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan

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• Sanae Otawa,

  Roles Writing – review & editing

  Affiliation Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan

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• Megumi Kushima,

  Roles Conceptualization, Writing – review & editing

  Affiliation Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan

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• Kunio Miyake,

  Roles Writing – review & editing

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

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• Hideki Yui,

  Roles Writing – review & editing

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

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• Tadao Ooka,

  Roles Writing – review & editing

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

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• Yuka Akiyama,

  Roles Conceptualization, Writing – review & editing

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

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• Hiroshi Yokomichi,

  Roles Writing – review & editing

  Affiliation Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

  https://orcid.org/0000-0001-7369-155X

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• Zentaro Yamagata,

  Roles Conceptualization, Supervision, Writing – review & editing

  Affiliations Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan, Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan

  https://orcid.org/0000-0003-4317-3721

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• the Japan Environment and Children’s Study Group

  ¶Membership of the Japan Environment and Children’s Study Group is provided in the Acknowledgments.

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