1. Division of Emergency Medicine, Department of Emergency, Disaster and General Medicine, Iwate Medical University School of Medicine, Morioka, Iwate, Japan
2. Poisoning and Drug Laboratory Division, Critical Care and Emergency Center, Iwate Medical University Hospital, Morioka, Iwate, Japan
3. Department of Neuropsychiatry, Iwate Medical University School of Medicine, Morioka, Iwate, Japan
4. Division of Forensic Medicine, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
5. Emergency Medical Center and Poison Center, Saitama Medical University Hospital, Moroyama, Iruma-gun, Saitama, Japan