1. Department of Health Sciences Education Hirosaki University Hirosaki Aomori Japan
2. Medical Education Development Center Gifu University Gifu Gifu Japan
3. Department of Emergency and Disaster Medicine Hirosaki University Hirosaki Aomori Japan
4. Department of Emergency Medicine Hirosaki General Medical Center Hirosaki Aomori Japan
5. Department of Clinical Engineering Hirosaki University School of Medicine and Hospital Aomori Aomori Japan
6. Emergency and Critical Care Center Aomori Prefectural Central Hospital Aomori Aomori Japan