[1] Mem Sloan Kettering Canc Ctr, Gastrointestinal Oncol Serv, New York, NY USA
[2] AstraZeneca, Clin Dev Dept, New York, NY USA
[3] AstraZeneca, Clin Dev Dept, Cambridge, England
[4] AstraZeneca, Oncol R&D, Oncol Biometr, Late Stage Dev, Gaithersburg, MD USA
[5] Sungkyunkwan Univ, Div Hem Oncol, Samsung Med Ctr, Seoul, South Korea