[1] Japanese Fdn Canc Res, Canc Inst Hosp, Dept Gastroenterol Chemotherapy, Ariake, Japan
[2] Natl Canc Ctr Hosp East, Dept Gastrointestinal Oncol, Kashiwa, Chiba, Japan
[3] Inst Klin Onkol Forsch, Inst Clin Canc Res, Frankfurt, Germany
[4] Seoul Natl Univ Hosp, Med Oncol, Seoul, South Korea
[5] Univ Chicago, Gastrointestinal Oncol Program, Chicago, IL 60637 USA
[6] Dana Farber Canc Inst, Ctr Esophageal & Gastr Canc, Med Oncol, Boston, MA 02115 USA
[7] Mem Sloan Kettering Canc Ctr, Med Oncol, 1275 York Ave, New York, NY 10021 USA
[8] Medstar Georgetown Univ Hosp, Lombardi Comprehens Canc Ctr, Hematol Oncol, Washington, DC USA
[9] Univ Leipzig, Univ Canc Ctr Leipzig, Leipzig, Germany
[10] Weill Cornell Med Coll, Med Oncol, New York, NY USA
[11] Univ Hosp Gasthuisberg, Digest Oncol, Leuven, Belgium
[12] KULeuven, Leuven, Belgium
[13] Sun Yat Sen Univ, Dept Med Oncol, Canc Ctr, Guangzhou, Guangdong, Peoples R China
[14] Astellas Pharma Global Dev Inc, Northbrook, IL USA
[15] Univ Texas MD Anderson Canc Ctr, Dept Gastrointestinal Med Oncol, Div Canc Med, Houston, TX 77030 USA