1. Department of Gastrointestinal Surgery, University Hospital of North Norway, Tromsø, Norway;
2. Department of Laboratory Medicine, University Hospital of North Norway, Tromsø, Norway;
3. Experimental and Clinical Pharmacology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø – The Arctic University of Norway, Tromsø, Norway;
4. Department of Microbiology and Infection Control, University Hospital of North Norway, Tromsø, Norway;
5. Research Group for Host-Microbe Interaction, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø – The Arctic University of Norway, Tromsø, Norway;
6. Department of Gastrointestinal Surgery, Hepatopancreatobiliary Section, University Hospital of Oslo at Rikshospitalet, Oslo, Norway