1. Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.
2. The Center for Psychiatric Oncology and Behavioral Sciences, Massachusetts General Hospital Cancer Center, Boston, Massachusetts.
3. Department of Health Policy and Management, Keio University School of Medicine, Tokyo, Japan.
4. National Center for Cognitive Behavior Therapy and Research, National Center of Neuropsychiatry and Psychiatry, Tokyo, Japan.
5. Department of Palliative Nursing, Health Sciences, Tohoku University Graduate School of Medicine, Sendai, Japan.