[1] Tohoku Univ, Grad Sch Med, Dept Palliat Nursing, Aoba Ku, Sendai, Miyagi 9808575, Japan
[2] Univ Tokyo, Grad Sch Med, Sch Hlth Sci & Nursing,Dept Adult Nursing Palliat, Bunkyo Ku, Tokyo 1130033, Japan
[3] Osaka Univ, Ctr Study Commun Design Psychol & Behav Sci, Grad Sch Human Sci, Osaka, Japan
[4] Osaka Univ, Dept Complementary & Alternat Med, Grad Sch Med, Osaka, Japan
[5] Seirei Mikatahara Hosp, Dept Palliat & Support Care, Palliat Care Team, Shizuoka, Japan
[6] Seirei Mikatahara Hosp, Seirei Hosp, Shizuoka, Japan
[7] Osaka Univ, Dept Palliat Med, Grad Sch Med, Osaka, Japan
[8] Tsukuba Med Ctr Hosp, Dept Palliat Med, Ibaraki, Japan