1. Division of Pathology; Ospedale Niguarda Ca' Granda; Piazza Ospedale Maggiore 3; Milano; Italy
2. The Falck Division of Medical Oncology; Ospedale Niguarda Ca' Granda; Piazza Ospedale Maggiore 3; Milano; Italy
3. Department of Pathology; Radboud University Nijmegen Medical Centre; Nijmegen; The Netherlands
4. Department of Pathology; Dupuytre University Hospital Center; 2 Avenue Martin-Luther-King; Limoges; France
5. Regina Elena Cancer Institute; Pathology Department; Via Elio Chianesi 53; Rome; Italy
6. Department of Oncology; University of Torino; Candiolo (Torino); Italy
7. Laboratory of Molecular Digestive Oncology, Department of Oncology; KU Leuven, Herestraat 49; Leuven; Belgium
8. Paris Sorbonne Cité University; INSERM UMR-S775; 45 Rue des Saints Pères; Paris; France
9. Department of Medical Oncology; Academic Medical Centre; University of Amsterdam; Amsterdam; The Netherlands