1. Department of Clinical Sciences, Section, of Surgery, Skåne University Hospital, Lund University, Malmö, Sweden;
2. Department of Gastrointestinal Oncology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan;
3. Department of Clinical Sciences, Section, of Gastroenterology, Skåne University Hospital, Lund University, Malmö, Sweden;
4. Department of Clinical Sciences, Section, of Pathology, Skåne University Hospital, Lund University, Malmö, Sweden