[1] Natl Canc Ctr, Tokyo, Japan
[2] Natl Inst Publ Hlth, Wako, Saitama, Japan
[3] Kanazawa Univ Hosp, Kanazawa, Ishikawa, Japan
[4] Kanagawa Canc Ctr, Yokohama, Kanagawa, Japan
[5] Osaka Int Canc Inst, Osaka, Japan
[6] Kyorin Univ, Mitaka, Tokyo, Japan
[7] Kyushu Univ, Fukuoka, Japan
[8] Hyogo Canc Ctr, Akashi, Hyogo, Japan
[9] Seirei Hamamatsu Gen Hosp, Hamamatsu, Shizuoka, Japan
[10] JFCR, Canc Inst Hosp, Tokyo, Japan
[11] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[12] Kanagawa Canc Ctr, Yokohama, Japan
[13] Meiji Pharmaceut Univ, Kiyose, Japan
[14] Kanagawa Canc Ctr, Dept Gastroenterol, Yokohama, Kanagawa, Japan