The number of physicians is related to the number of nighttime emergency surgeries in Japan: An ecological study

• Yusuke Yamadori ,

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

  * E-mail: yamadori.yusuke@kagawa-u.ac.jp

  Affiliations Department of Anesthesiology, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa, Japan, Department of Anesthesiology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa, Japan, Department of Public Health, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa, Japan

  https://orcid.org/0000-0002-2389-9675

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• Tomohiro Hirao,

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

  Affiliation Department of Public Health, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa, Japan

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• Kanae Kanda,

  Roles Conceptualization, Writing – review & editing

  Affiliation Department of Public Health, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa, Japan

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• Gotaro Shirakami

  Roles Writing – review & editing

  Affiliation Department of Anesthesiology, Faculty of Medicine, Kagawa University, Miki-cho, Kagawa, Japan

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