[1] Osaka Univ Hosp, Palliat & Support Care Ctr, Osaka, Japan
[2] Osaka Int Canc Inst, Dept Psychooncol & Palliat Med, Osaka, Japan
[3] Aichi Med Univ, Grad Sch Med, Dept Palliat & Support Med, Nagakute, Aichi, Japan
[4] Natl Canc Ctr, Dept Palliat Med, Tokyo, Japan
[5] Cardiff Univ, Coll Biomed & Life Sci, Sch Healthcare Sci, Cardiff, Wales
[6] Univ Alberta, Dept Oncol, Div Palliat Care Med, Cross Canc Inst, Edmonton, AB, Canada