[1] Toho Univ, Dept Clin Oncol, Sch Med, Fac Med, 5-21-16 Omorinishi, Ota, Tokyo 1438540, Japan
[2] Toho Univ, Ohashi Med Ctr, Palliat Care Team, Meguro, Tokyo, Japan
[3] Assoc Palliat Care Univ Hosp, Working Grp Educ, Shinagawa City, Tokyo, Japan
[4] Showa Univ, Sch Med, Off Med Educ, Shinagawa City, Tokyo, Japan
[5] Yokohama City Univ, Med Ctr, Chemotherapy & Palliat Care, Yokohama, Kanagawa, Japan
[6] Asoka Vihara Hosp, Joyo City, Kyoto, Japan
[7] Kawasaki Municipal Tama Hosp, Nursing Dept, Kawasaki, Kanagawa, Japan
[8] Tokyo Med & Dent Univ, Dept Clin Oncol, Grad Sch Med & Dent Sci, Bunkyo City, Tokyo, Japan