[1] UCLA, Jonsson Comprehens Canc Ctr, Geffen Sch Med, Los Angeles, CA 90024 USA
[2] Jinling Hosp, Peoples Liberat Army Canc Ctr, Nanjing, Peoples R China
[3] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[4] Univ Med Ctr, Mainz, Germany
[5] Gustave Roussy Canc Campus Grand Paris, Villejuif, France
[6] Seoul Natl Univ, Seoul Natl Univ Hosp, Dept Internal Med, Coll Med, Seoul, South Korea
[7] Kindai Univ, Dept Gastroenterol & Hepatol, Fac Med, Osaka, Japan
[8] Sungkyunkwan Univ, Samsung Med Ctr, Dept Med, Sch Med, Seoul, South Korea
[9] NN Blokhin Minist Hlth, Russian Oncol Res Ctr, Moscow, Russia
[10] Hosp La Croix Rousse, Lyon, France
[11] Univ Texas MD Anderson Canc Ctr, GI Med Oncol Dept, Houston, TX 77030 USA
[12] City Hope Comprehens Canc Ctr, Dept Med Oncol, Duarte, CA USA
[13] Beckman Res Inst, Duarte, CA USA
[14] Chi Mei Med Ctr, Dept Internal Med, Div Hematol & Oncol, Tainan, Taiwan
[15] Genentech Inc, San Francisco, CA 94080 USA
[16] Roche Prod Dev, Shanghai, Peoples R China
[17] Harvard Med Sch, Massachusetts Gen Hosp, Boston, MA 02115 USA
[18] Natl Taiwan Univ Hosp, Taipei, Taiwan
[19] Natl Taiwan Univ, Canc Ctr, Taipei, Taiwan