1. Department of Immunology; Centre for Immune Regulation; Oslo University Hospital-Rikshospitalet; Oslo Norway
2. Department of Pathology; Oslo University Hospital-Rikshospitalet; Oslo Norway
3. Department of Gastroenterology; Oslo University Hospital-Ullevål; Oslo Norway
4. Department of Transplantation Medicine; Oslo University Hospital-Rikshospitalet; Oslo Norway
5. Department of Immunology; Centre for Immune Regulation; University of Oslo; Oslo Norway