[1] Natl Canc Ctr Hosp East, Dept Palliat Med, Kashiwa, Japan
[2] Canc Inst Hosp Japanese Fdn Canc Res, Dept Palliat Therapy, Tokyo, Japan
[3] Natl Canc Ctr Hosp East, Dept Thorac Oncol, Kashiwa, Japan
[4] Natl Canc Ctr, Ctr Publ Hlth Sci, Tokyo, Japan
[5] Natl Canc Ctr, Innovat Ctr Support Palliat & Psychosocial Care, Tokyo, Japan
[6] Keio Univ, Sch Med, Dept Neuropsychiat, Tokyo, Japan
[7] Tohoku Univ, Sch Med, Div Biostat, Sendai, Japan
[8] JORTC Data Ctr, Dept Biostat, Tokyo, Japan
[9] Univ Tokyo, Grad Sch Med, Dept Clin Trial Data Management, Tokyo, Japan
[10] Natl Canc Ctr Hosp East, Dept Nursing, Kashiwa, Japan
[11] Natl Canc Ctr, Dept Palliat Med, Tokyo, Japan
[12] Natl Ctr Global Hlth & Med, Ctr Hosp, Tokyo, Japan
[13] Seirei Mikatahara Hosp, Palliat & Support Care, Hamamatsu, Japan
[14] Natl Canc Ctr, Dept Thorac Oncol, Tokyo, Japan