1. Laboratory of Surgical Research, Institute of Clinical Medicine, University of Tromsø,
Tromsø, Norway
2. Department of Digestive Surgery, University Hospital of North Norway,
Tromsø, Norway
3. Department of Laboratory Medicine, Division of Diagnostic Services, University of Tromsø,
Tromsø, Norway
4. Department of Medical Biology, Medical Pharmacology and Toxicology, Faculty of Health Sciences,
Tromsø, Norway
5. Department of Gastroenterology, University Hospital of North Norway,
Tromsø, Norway