[1] Veneto Inst Oncol IOV IRCCS, Dept Oncol, Padua, Italy
[2] Sorbonne Univ, Med Oncol Dept, Paris, France
[3] Hop St Antoine, Assistance Publ Hop Paris, Paris, France
[4] Asklepios Tumorzentrum AK Altona, Dept Oncol, Hamburg, Germany
[5] UCM, Hosp Univ 12 Octubre Imas12, Dept Med, Madrid, Spain
[6] Netherlands Canc Inst, Dept Gastrointestinal Oncol, Amsterdam, Netherlands
[7] Vall dHebron Univ Hosp & Inst Oncol VHIO, Med Oncol Dept, Barcelona, Spain
[8] Univ Southern Calif, Norris Comprehens Canc Ctr, Dept Med, Los Angeles, CA USA
[9] Univ Southern Calif, Norris Comprehens Canc Ctr, Dept Prevent Med, Los Angeles, CA USA
[10] Univ Hosp Southern Denmark, Dept Oncol, Vejle Hosp, Vejle, Denmark
[11] Canc Res SA, Med Oncol, Adelaide, SA, Australia
[12] Univ Med Ctr Utrecht, Dept Med Oncol, Utrecht, Netherlands
[13] Natl Canc Ctr Hosp East, Dept Gastroenterol & Gastrointestinal Onc, Chiba, Japan
[14] Bristol Myers Squibb, Worldwide Hlth Econ & Outcomes Res, Princeton, NJ USA
[15] Bristol Myers Squibb, Patient Reported Outcome Assessment Asset & Indic, Princeton, NJ USA
[16] Stat Res, Adelphi, Cheshire, England
[17] Adelphi Values, Patient Ctr Outcomes, Adelphi, Cheshire, England
[18] Adelphi Values, Patient Ctr Outcomes, Boston, MA USA
[19] Bristol Myers Squibb, Biostat, Princeton, NJ USA
[20] Bristol Myers Squibb, Oncol Global Drug Dev, Princeton, NJ USA
[21] Bristol Myers Squibb, Oncol Clin Dev, Princeton, NJ USA
[22] Univ Hosp Gasthuisberg, Gastroenterol Digest Oncol, Leuven, Belgium
[23] Univ Leuven KU Leuven, Gastroenterol Digest Oncol, Leuven, Belgium