1. Gastroenterology Medicine Center Shonan Kamakura General Hospital Kanagawa Japan
2. Department of Health Data Science Yokohama City University Kanagawa Japan
3. Emergency Life–Saving Technique Academy of Tokyo Foundation for Ambulance Service Development Tokyo Japan
4. Department of Clinical Epidemiology and Health Economics, School of Public Health The University of Tokyo Tokyo Japan
5. Emergency and Critical Care Center Tokyo Metropolitan Hiroo Hospital Tokyo Japan
6. Department of Emergency Medicine Kyoto Prefectural University of Medicine Kyoto Japan
7. Department of Emergency and Critical Care Medicine Juntendo University Urayasu Hospital Chiba Japan
8. Data Science Center Jichi Medical University Tochigi Japan
9. Department of Health Informatics and Policy, Graduate School of Medicine Tokyo Medical and Dental University Tokyo Japan