1. Ikeda Hospital Ryugasaki Ibaraki Japan
2. Department of Psychiatry, Faculty of Medicine University of Tsukuba Tsukuba Ibaraki Japan
3. Department of Psychiatry University of Tsukuba Hospital Tsukuba Ibaraki Japan
4. Ibaraki Prefectural Medical Center of Psychiatry Kasama Ibaraki Japan
5. Department of Disaster and Community Psychiatry, Faculty of Medicine University of Tsukuba Tsukuba Ibaraki Japan
6. Ibaraki Prefectural Research Center of Disaster and Community Psychiatry Kasama Ibaraki Japan