[1] Natl Canc Ctr, Dept Psychooncol, Tokyo, Japan
[2] Natl Canc Ctr, Dept Palliat Med, Tokyo, Japan
[3] Natl Ctr Global Hlth & Med, Dept Palliat Care, Tokyo, Japan
[4] Natl Canc Ctr, Dept Nursing, Tokyo, Japan
[5] Natl Canc Ctr, Dept Hematol, Tokyo, Japan