[1] Kyoto Univ Hosp, Dept Clin Oncol, Kyoto, Japan
[2] RIKEN Adv Inst Computat Sci, Kobe, Hyogo, Japan
[3] Kyoto Univ Hosp, Div Informat Technol & Adm Planning, Kyoto, Japan
[4] Kyoto Univ, Grad Sch Med, Sch Publ Hlth, Dept Healthcare Epidemiol, Kyoto, Japan
[5] Kyoto Univ Hosp, Inst Adv Clin & Translat Sci, Kyoto, Japan
[6] Mitsubishi Kyoto Hosp, Dept Palliat Care, Kyoto, Japan
[7] Mitsubishi Kyoto Hosp, Dept Clin Oncol, Kyoto, Japan
[8] Kyoto Min Iren Chuo Hosp, Dept Med Oncol, Kyoto, Japan
[9] Natl Canc Ctr Hosp East, Dept Gastrointestinal Oncol, Kashiwa, Chiba, Japan
[10] Kyoto Univ, Grad Sch Med, Dept Gastroenterol & Hepatol, Kyoto, Japan
[11] Kyoto Univ, Grad Sch Med, Dept Clin Syst Oncoinformat, Kyoto, Japan
[12] Suita Tokushukai Hosp, Dept Palliat Med, Suita, Osaka, Japan
[13] Seirei Mikatahara Gen Hosp, Palliat & Support Care Div, Hamamatsu, Shizuoka, Japan