[1] Natl Canc Ctr Hosp East, Dept Hepatobiliary & Pancreat Oncol, Kashiwa, Chiba, Japan
[2] Sun Yat Sen Univ, Affiliated Hosp 1, Dept Hepatobiliary Surg, Guangzhou, Peoples R China
[3] Seoul Natl Univ Hosp, Dept Med, Seoul, South Korea
[4] AstraZeneca, Global Med Dev, Gaithersburg, MD USA
[5] AstraZeneca, Oncol R&D, Cambridge, England
[6] AstraZeneca, Oncol Biometr, Cambridge, England
[7] Univ Texas MD Anderson Canc Ctr, Gastrointestinal Med Oncol, Houston, TX USA