[1] Univ Libre Bruxelles ULB, Hop Univ Bruxelles HUB, Inst Jules Bordet, Dept Gastrointestinal Oncol, Anderlecht, Belgium
[2] Univ Libre Bruxelles ULB, Hop Univ Bruxelles HUB, Inst Jules Bordet, GI Lab, Anderlecht, Belgium
[3] Hop St Louis, AP HP, Dept Gastroenterol & Digest Oncol, Paris, France
[4] Hop Prive Jean Mermoz, Dept Gastrointestinal Oncol, Lyon, France
[5] ICANS Inst Cancerol Strasbourg Europe, Dept Oncol, Strasbourg, France
[6] Fdn Cognacq Jay, HFB Hop Franco Britann, Dept Med Oncol, Levallois Perret, France
[7] Int Inst Drug Dev, Biostat, Louvain, Belgium
[8] Hosp Ambroise Pare, Dept Oncol, Mons, Belgium
[9] CHU Poitiers Jean Bernard Hop, Dept Oncol, Poitiers, France
[10] UZ Gent, Dept Gastroenterol, Univ Hosp Ghent, Ghent, Belgium
[11] Ctr Georges Francois Leclerc Dijon, Dept Med Oncol, Dijon, France
[12] Chirec Delta, Dept Med Oncol, Auderghem, Belgium
[13] ICO Inst Cancerol Ouest Rene Gauducheau, Dept Med Oncol, St Herblain, France
[14] UZA Univ Hosp Antwerp, Dept Oncol, Edegem, Belgium
[15] UCLouvain St Luc, Dept Digest Oncol, Clin Univ St Luc, Woluwe St Lambert, Belgium