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 General Hospital, Shizuoka, Japan.
3. Palliative Care Partners Co., Ltd., Tokyo, Japan.
4. Yokohama City Minato Red Cross Hospital, Kanagawa, Japan.