[1] Saiseikai Sendai Hosp, Dept Gastroenterol, Kagoshima, Japan
[2] Izumi Gen Med Ctr, Dept Gastroenterol, Kagoshima, Japan
[3] Saga Med Ctr Koseikan, Dept Med Oncol, Saga, Japan
[4] Minato Med Clin, Dept Internal Med, Chuo Ku, 3-11-3 Nagahama, Fukuoka 8100072, Japan
[5] Natl Hosp Org, Clin Res Inst, Kyushu Canc Ctr, Fukuoka, Japan
[6] Yamaguchi Univ, Grad Sch Med, Dept Biostat, Yamaguchi, Japan
[7] Kagoshima Univ, Grad Sch Med & Dent Sci, Digest & Lifestyle Dis, Kagoshima, Japan
[8] Kagoshima Univ, Grad Sch Med & Dent Sci, Kagoshima, Japan
[9] Saga Med Ctr Koseikan, Dept Hepatobiliary & Pancreatol, Saga, Japan
[10] Japanese Red Cross Kumamoto Hosp, Dept Hematol & Oncol, Kumamoto, Japan
[11] Kagoshima City Hosp, Dept Med Oncol, Kagoshima, Japan
[12] Oita Univ, Fac Med, Dept Med Oncol & Hematol, Oita, Japan
[13] Kurume Univ Hosp, Div Gastroenterol, Dept Internal Med, Kurume, Fukuoka, Japan
[14] Japan Community Healthcare Org, Depat Hematol Oncol, Kyushu Hosp, Fukuoka, Japan
[15] Gifu Univ Hosp, Canc Ctr, Gifu, Japan
[16] Nagasaki Univ, Grad Sch Biomed Sci, Dept Gastroenterol & Hepatol, Nagasaki, Japan
[17] Imari Arita Kyoritsu Hosp, Dept Internal Med, Saga, Japan
[18] Natl Canc Ctr Hosp East, Dept Hepatobiliary & Pancreat Oncol, Chiba, Japan
[19] Fujikawa Hosp, Dept Internal Med, Saga, Japan
[20] Hamanomachi Hosp, Dept Med Oncol, Fukuoka, Japan
[21] Sasebo Kyosai Hosp, Dept Med Oncol, Nagasaki, Japan
[22] Karatsu Red Cross Hosp, Dept Internal Med, Saga, Japan
[23] Kimitsu Chuo Hosp, Dept Med Oncol, Chiba, Japan
[24] Fukuoka Wajiro Hosp, Dept Med Oncol, Fukuoka, Japan
[25] Karatsu Higashi Matsuura Med Assoc Ctr, Saga, Japan