[1] Japan Community Healthcare Org Kyushu Hosp, Dept Hematol Oncol, Kitakyushu, Fukuoka, Japan
[2] Hamanomachi Hosp, Dept Med Oncol, Fukuoka, Japan
[3] Miyazaki Prefectural Miyazaki Hosp, Miyazaki, Japan
[4] Natl Hosp Org Kyushu Med Ctr, Dept Med Oncol, Fukuoka, Japan
[5] Kyushu Univ, Grad Sch Med Sci, Dept Med & Biosyst Sci, Fukuoka, Japan
[6] Kyushu Univ, Dept Med & Biosyst Sci, Fukuoka, Japan
[7] Kyushu Natl Canc Ctr, Fukuoka, Japan
[8] Kyushu Natl Canc Ctr, Dept Gastrointestinal & Med Oncol, Fukuoka, Japan
[9] Kyushu Univ, Dept Comprehens Clin Oncol, Fac Med Sci, Fukuoka, Japan