1. Department of Palliative Nursing, Health Sciences, Tohoku University Graduate School of Medicine, Miyagi, Japan
2. National Center of Neurology and Psychiatry, National Center for Cognitive Behavior Therapy and Research, Tokyo, Japan
3. Department of Human Scienecs, Musashino University, Tokyo, Japan
4. Department of Holistic Human Sciences, School of Human Welfare Studies, Kwansei Gakuin University, Hyogo, Japan
5. Palliative Care Team, Department of Palliative and Supportive Care, Seirei Mikatahara General Hospital, Shizuoka, Japan
6. Department of Palliative, Tsukuba Medical Center Foundation, Tsukuba Medical Center Hospital, Tsukuba, Japan