Hygroscopic dilators vs balloon catheter ripening of the cervix for induction of labor in nulliparous women at term: Retrospective study

• Ryosuke Shindo,

  Roles Writing – original draft

  Current address: Department of Obstetrics and Gynecology Yokosuka Kyosai Hospital, Yokosuka, Japan

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

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• Shigeru Aoki ,

  Roles Conceptualization, Writing – review & editing

  * E-mail: smyyaoki@yahoo.co.jp

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

  http://orcid.org/0000-0001-5307-575X

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• Naohiro Yonemoto,

  Roles Data curation, Formal analysis

  Current address: Department of Biostatistics, Graduate School of Medicine and Faculty of Medicine Kyoto University, Kyoto, Japan

  Affiliation Department of Biostatistics and Epidemiology, Yokohama City University Graduate School of Medicine and University Medical Center, Yokohama, Japan

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• Yuriko Yamamoto,

  Roles Writing – review & editing

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

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• Junko Kasai,

  Roles Resources

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

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• Michi Kasai,

  Roles Software

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

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• Etsuko Miyagi

  Roles Supervision

  Affiliation Department of Obstetrics and Gynecology, Yokohama City University School of Medicine, Yokohama, Japan

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