1. Department of Palliative Medicine, Tohoku University School of Medicine, Sendai, Japan.
2. Department of Palliative Medicine, Takeda General Hospital, Aizu Wakamatsu, Japan.
3. Department of Palliative Nursing, Tohoku University School of Medicine, Sendai, Japan.
4. Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
5. Department of Internal Medicine, Palliative Care, Peace Home Care Clinic, Shiga, Japan.
6. Department of Internal Medicine, Palliative Care, Medical Corporation Teieikai Chiba Home Care Clinic, Chiba, Japan.
7. Department of Palliative Medicine, Yokohama City University Hospital, Yokohama, Japan.
8. Department of Palliative and Supportive Care, Yokohama Minami Kyosai Hospital, Yokohama, Japan.
9. Department of Biostatistics, JORTC Data Center, Tokyo, Japan.
10. Department of Internal Medicine, Palliative Care, Tokyo Medical and Dental University Hospital, Tokyo, Japan.