[1] Canc Res UK, Cambridge Res Inst, Li Ka Shing Ctr, Cambridge CB2 ORE, England
[2] Univ Penn, Abramson Family Canc Res Inst, Philadelphia, PA 19104 USA
[3] Sidney Canc Ctr, Sol Goldman Pancreat Canc Res Ctr, Dept Oncol, Baltimore, MD 21287 USA
[4] Sidney Canc Ctr, Sol Goldman Pancreat Canc Res Ctr, Dept Pathol, Baltimore, MD 21287 USA
[5] Johns Hopkins Univ, Baltimore, MD 21287 USA
[6] Shanghai Jiao Tong Univ, Ruijin Hosp, Dept Gastroenterol, Sch Med, Shanghai 200025, Peoples R China
[7] Univ Hosp Dresden, Dept Surg, D-01307 Dresden, Germany
[8] Fred Hutchinson Canc Res Ctr, Clin Res & Publ Hlth Sci Div, Seattle, WA 98109 USA
[9] Univ Washington, Seattle, WA 98109 USA
[10] Merck & Co Inc, Oncol Franchise, N Wales, PA 19454 USA
[11] Cambridge Univ Hosp Natl Hlth Serv Fdn Trust, Addenbrookes Hosp, Dept Histopathol, Cambridge CB2 2QQ, England
[12] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[13] Univ Pittsburgh, Med Ctr, Div Hematol & Oncol, Pittsburgh, PA 15213 USA
[14] Infin Pharmaceut, Cambridge, MA 01239 USA