1. Department of Oncology, University of Turku and Turku University Hospital, Turku, Finland;
2. Department of Digestive Surgery, University of Turku and Turku University Hospital, Turku, Finland;
3. Auria Biobank, University of Turku and Turku University Hospital, Turku, Finland;
4. Department of Pathology, University of Turku and Turku University Hospital, Turku, Finland;
5. Medicity Research Laboratory, University of Turku, Turku, Finland;
6. Department of Pathology, University of Helsinki and HUSLAB, Helsinki University Hospital, Helsinki, Finland