[1] Tohoku Univ, Sch Med, Dept Palliat Med, 2-1 Seiryomachi, Sendai, Miyagi 9808575, Japan
[2] Dongguk Univ, Ilsan Hosp, Dept Family Med, Hosp & Palliat Care Ctr, Goyang Si, Gyeonggi Do, South Korea
[3] Dongguk Univ, Med Sch, Dept Med, Seoul, South Korea
[4] Senri Chuo Hosp, Dept Palliat Care, Toyonaka, Osaka, Japan
[5] Seirei Mikatahara Gen Hosp, Div Palliat & Support Care, Hamamatsu, Shizuoka, Japan
[6] Japan Baptist Hosp, Kyoto, Japan
[7] Kawasaki Municipal Ida Hosp, Kawasaki Comprehens Care Ctr, Kawasaki, Kanagawa, Japan
[8] Tsukuba Med Ctr Hosp, Dept Palliat Med, Tsukuba, Ibaraki, Japan
[9] Tokyo Med & Dent Univ, Med Hosp, Dept Internal Med, Palliat Care, Tokyo, Japan
[10] JCHO Tokyo Shinjuku Med Ctr, Dept Palliat Care Unit, Tokyo, Japan