1. Department of Clinical Sciences, Malmö, Section of Surgery, Skåne University Hospital, Lund University, Malmö, Sweden
2. Department of Clinical Sciences, Malmö, Section of Pathology, Skåne University Hospital, Lund University, Malmö, Sweden
3. Department of Clinical Sciences, Malmö, Section of Gastroenterology, Skåne University Hospital, Lund University, Malmö, Sweden