1. Department of Psychiatry, Nara Medical University School of Medicine, Nara, Japan
2. Department of Psychiatry, Tokyo Metropolitan Police Hospital, Tokyo, Japan
3. Department of Psychiatric Rehabilitation, National Center of Neurology and Psychiatry, National Institute of Mental Health, Tokyo, Japan
4. Department of Psychiatry, Teikyo University School of Medicine, Tokyo, Japan
5. Center for Clinical Research and Development Initiative, Osaka Psychiatric Medical Center, Osaka, Japan
6. Department of Mental Health and Psychiatric Nursing, the University of Tokyo, Tokyo, Japan