Neonatal factors related to center variation in the incidence of late-onset circulatory collapse in extremely preterm infants

• Yume Suzuki ,

  Contributed equally to this work with: Yume Suzuki, Yumi Kono, Takahiro Hayakawa

  Roles Writing – original draft

  * E-mail: yume@jichi.ac.jp

  Affiliation Department of Pediatrics, Jichi Medical University, Shimotsuke city, Tochigi Pref., Japan

  http://orcid.org/0000-0002-0778-8940

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• Yumi Kono ,

  Contributed equally to this work with: Yume Suzuki, Yumi Kono, Takahiro Hayakawa

  Roles Supervision, Writing – review & editing

  Affiliation Department of Pediatrics, Jichi Medical University, Shimotsuke city, Tochigi Pref., Japan

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• Takahiro Hayakawa ,

  Contributed equally to this work with: Yume Suzuki, Yumi Kono, Takahiro Hayakawa

  Roles Conceptualization, Formal analysis

  Affiliation Medical Policy Division, Department of Health and Welfare Services, Tochigi Prefectural Office, Utsunomiya city, Tochigi Pref., Japan

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• Hironori Shimozawa,

  Roles Conceptualization

  Affiliation Department of Pediatrics, Jichi Medical University, Shimotsuke city, Tochigi Pref., Japan

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• Miyuki Matano,

  Roles Conceptualization

  Affiliation Department of Pediatrics, Jichi Medical University, Shimotsuke city, Tochigi Pref., Japan

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• Yukari Yada,

  Roles Conceptualization, Writing – review & editing

  Affiliation Department of Pediatrics, Jichi Medical University, Shimotsuke city, Tochigi Pref., Japan

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• for the Neonatal Research Network Japan

  ¶The institutions enrolled in the study of the Neonatal Research Network, Japan, are provided in the Acknowledgments.

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