1. Department of Disaster and Community Psychiatry, Faculty of Medicine University of Tsukuba Tsukuba Japan
2. Department of Psychiatry, Faculty of Medicine University of Tsukuba Tsukuba Japan
3. Department of Neuropsychopharmacology, National Institute of Mental Health National Center of Neurology and Psychiatry Kodaira Japan
4. Department of Neuropsychiatry Kansai Medical University Hirakata Japan
5. Department of Emergency Medicine Teikyo University Hospital Itabashi‐ku Japan
6. Hirayasu Hospital Urasoe Japan
7. Department of Neuropsychiatry Sapporo Medical University Graduate School of Medicine Sapporo Japan