[1] Fdn IRCCS, Ist Nazl Tumori Milano, Hepatopancreatobiliary & Digest Surg, Milan, Italy
[2] Emory Univ, Atlanta, GA 30322 USA
[3] Seattle Canc Care Alliance, Seattle, WA USA
[4] Temple Univ, Ctr Canc, Philadelphia, PA 19122 USA
[5] Mayo Clin, Ctr Canc, Scottsdale, AZ USA
[6] Hannover Med Sch, Gastro Hepato & Endocrinol Dept, Hannover, Germany
[7] UCL, Canc Inst, Paul OGorman Bldg, London, England
[8] IRCCS, Ist Oncol Veneto, Padua, Italy
[9] Mercy Canc & Hematol, Springfield, IL USA
[10] Basilea Pharmaceut Ltd, Oncol Dept, Basel, Switzerland
[11] Basilea Pharmaceut AG, Dev, Basel, Switzerland
[12] Univ Texas MD Anderson Canc Ctr, Gastrointestinal Med Oncol, Houston, TX 77030 USA