1. Department of Emergency Medicine NHO Ureshino Medical Center Ureshino Saga Japan
2. Kitasato University Hospital Sagamihara Kanagawa Japan
3. Department of Anesthesiology Kinan Hospital Wakayama Japan
4. Division of Patient Safety and Quality Nara Medical University Kashihara Nara Japan
5. Department of Surgery Jichi Medical University Shimotsuke Tochigi Japan
6. Tokyo Bay Urayasu‐Ichikawa Medical Center Urayasu Chiba Japan