[1] Natl Cheng Kung Univ, Natl Cheng Kung Univ Hosp, Coll Med, Div Hematol & Oncol,Dept Internal Med, Tainan, Taiwan
[2] Kobe Univ Hosp, Dept Med Oncol & Hematol, Kobe, Hyogo, Japan
[3] Kobe Univ Hosp, Canc Ctr, Kobe, Hyogo, Japan
[4] Aichi Canc Ctr Hosp, Dept Head & Neck Surg, Nagoya, Aichi, Japan
[5] Japanese Fdn Canc Res, Canc Inst Hosp, Dept Med Oncol, Tokyo, Japan
[6] Shizuoka Canc Ctr, Div Gastrointestinal Oncol, Shizuoka, Japan
[7] Hyogo Canc Ctr, Dept Head & Neck Surg, Akashi, Hyogo, Japan
[8] Hokkaido Univ Hosp, Dept Med Oncol, Sapporo, Hokkaido, Japan
[9] Natl Taiwan Univ Hosp, Dept Oncol, Taipei, Taiwan
[10] Osaka Med Coll Hosp, Canc Chemotherapy Ctr, Takatsuki, Osaka, Japan
[11] Catholic Univ Korea, Seoul St Marys Hosp, Dept Internal Med, Div Med Oncol, Seoul, South Korea
[12] Queen Elizabeth Hosp, Dept Clin Oncol, Hong Kong, Peoples R China
[13] Univ Pittsburgh, Med Ctr, Canc Ctr, UPMC Hillman Canc Ctr, Pittsburgh, PA USA
[14] Univ Texas MD Anderson Canc Ctr, Div Canc Med, Dept Thorac Head & Neck Med Oncol, Houston, TX 77030 USA
[15] ONO Pharmaceut Co Ltd, Oncol Med Affairs, Sect 1, Osaka, Japan
[16] Bristol Myers Squibb, BMS, Oncol Clin Dev, Princeton, NJ USA
[17] Natl Canc Ctr Hosp East, Dept Head & Neck Med Oncol, Kashiwa, Chiba, Japan