[1] Natl Canc Ctr, Dept Breast & Med Oncol, Tokyo, Japan
[2] Natl Canc Ctr, Dept Gastrointestinal Med Oncol, Tokyo, Japan
[3] Keio Univ, Grad Sch Med, Dept Med, Tokyo, Japan
[4] Natl Ctr Global Hlth & Med, Dept Breast Med Oncol, Tokyo, Japan
[5] St Lukes Int Hosp, Dept Pediat, Tokyo, Japan
[6] Childrens Canc Assoc Japan, Tokyo, Japan
[7] Tohoku Univ, Grad Sch Educ, Sendai, Miyagi, Japan
[8] Natl Canc Ctr, Dept Psychooncol, Tokyo, Japan
[9] Osaka City Gen Hosp, Clin Dept Palliat Med, Osaka, Japan
[10] Natl Hosp Org, Clin Res Ctr, Nagoya Med Ctr, Nagoya, Aichi, Japan