About the Authors
- Kyoko Kondo
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Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Methodology, Project administration, Software, Validation, Visualization, Writing – original draft, Writing – review & editing
* E-mail: kyou@med.osaka-cu.ac.jp
Affiliation Osaka City University Hospital Administration Division, Osaka, Japan
- Satoko Ohfuji
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Roles Conceptualization, Data curation, Formal analysis, Methodology, Project administration, Software, Validation, Visualization, Writing – review & editing
Affiliation Department of Public Health, Osaka City University Graduate School of Medicine, Osaka, Japan
- Kenji Watanabe
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Roles Investigation, Methodology, Resources, Writing – review & editing
Affiliations Department of Intestinal Inflammation Research, Hyogo College of Medicine, Hyogo, Japan, Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Hirokazu Yamagami
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Roles Investigation, Methodology, Resources, Writing – review & editing
Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Wakaba Fukushima
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Roles Conceptualization, Data curation, Formal analysis, Methodology, Software, Validation, Visualization, Writing – review & editing
Affiliation Department of Public Health, Osaka City University Graduate School of Medicine, Osaka, Japan
- Kazuya Ito
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Roles Data curation, Formal analysis, Software, Validation, Writing – review & editing
Affiliation Department of Public Health, Osaka City University Graduate School of Medicine, Osaka, Japan
- Yasuo Suzuki
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Roles Conceptualization, Funding acquisition, Investigation, Project administration, Resources, Supervision, Visualization, Writing – review & editing
Affiliation Inflammatory Bowel Disease Center, Toho University Sakura Medical Center, Chiba, Japan
- Yoshio Hirota
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Roles Conceptualization, Methodology, Supervision, Visualization, Writing – review & editing
Affiliation College of Healthcare Management, Fukuoka, Japan
- for the Japanese Case-Control Study Group for Crohn's disease
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¶Membership of the Japanese Case-Control Study Group for Crohn's disease is provided in the Acknowledgments.
Competing Interests
The authors have declared that no competing interests exist.