1. Department of Adult Nursing/Palliative Care Nursing, School of Health Sciences and Nursing, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
2. Department of Palliative and Supportive care, Palliative Care Team and Seirei Hospice, Seirei Mikatahara Hospital, Shizuoka, Japan.
3. Graduate School of Human Sciences, Osaka Univeristy, Osaka, Japan.
4. Graduate School of Comprehensive Human Science, University of Tsukuba, Ibaraki, Japan.
5. Department of Palliative Medicine, Tsukuba Medical Center Hospital, Ibaraki, Japan.
6. Department of Palliative Medicine, National Cancer Center, Tokyo, Japan.
7. National Cancer Center, Tokyo, Japan.
8. Department: Psycho-Oncology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East. Chiba, Japan.