1. Department of Gastroenterological Surgery Kagawa University Kita‐gun Japan
2. Shock and Trauma Center/Hokusoh HEMS Nippon Medical School Chiba Hokusoh Hospital Inzai Japan
3. Department of Digestive Surgery Kawasaki Medical School Kurashikishi‐City Japan
4. Department of Radiology Nasu Red Cross Hospital Otawara‐City Japan
5. Department of Surgery Teine Keijinkai Hospital Sapporo‐City Japan
6. Division of Gastroenterological and General Surgery St. Marianna University School of Medicine Kawasaki‐City Japan
7. Trauma and Acute Critical Care Center Tokyo Medical and Dental University Hospital of Medicine Bunkyo‐ku Japan
8. Department of Emergency and Critical Care Medicine Kimitsu Chuo Hospital Kisarazu‐City Japan
9. Department of Hygiene Kagawa University Kita‐gun Japan