[1] Natl Canc Ctr, Gastrointestinal Med Oncol, Tokyo, Japan
[2] Sungkyunkwan Univ, Samsung Med Ctr, Med, Seoul, South Korea
[3] Weill Cornell Med Coll, Med Oncol Solid Tumor Program, New York, NY USA
[4] Dana Farber Canc Inst, Med Oncol, Boston, MA 02115 USA
[5] Univ Montpellier, ICM, INSERM, Med Oncol,IRCM, Montpellier, France
[6] Natl Canc Ctr Hosp East, Expt Therapeut, Chiba, Japan
[7] Natl Canc Ctr Hosp East, Gastroenterol & Gastrointestinal Oncol, Chiba, Japan
[8] CHU Brest, Inst Cancerol & Hematol, Canc Inst, Brest, France
[9] Shanghai Chest Hosp, Esophageal Dis Ctr, Thorac & Esophageal Surg, Shanghai, Peoples R China
[10] Asan Med Ctr, Oncol, Seoul, South Korea
[11] Yonsei Univ Hlth Syst, Severance Hosp, Yonsei Canc Ctr, Seoul, South Korea
[12] Christie Hosp NHS Trust, Med Oncol, Manchester, Lancs, England
[13] Kaohsiung Chang Gung Mem Hosp, Oncol & Hematol, Kaohsiung, Taiwan
[14] Chang Gung Univ, Coll Med, Kaohsiung, Taiwan
[15] Prince Songkla Univ Hosp, Med, Songkhla, Thailand
[16] Vall dHebron Inst Oncol, Med Oncol, Barcelona, Spain
[17] Hematol Oncol Practice Eppendorf, Hematol Oncol, Hamburg, Germany
[18] Univ Canc Ctr Hamburg, Hamburg, Germany
[19] Merck Sharp & Dohme Corp, Med Oncol, Kenilworth, NJ USA
[20] Peking Univ Canc Hosp & Inst, Gastrointestinal Oncol, Beijing, Peoples R China