1. Division of Emergencies and Critical Care, Oslo University Hospital–Rikshospitalet, Oslo, Norway
2. Faculty of Medicine, University of Oslo, Oslo, Norway
3. Department of Immunology, Oslo University Hospital–Rikshospitalet, Oslo, Norway
4. Section for Gastroenterology, Department of Transplantation Medicine, Oslo University Hospital–Rikshospitalet, Oslo, Norway
5. Section for Transplant Surgery, Department of Transplantation Medicine, Oslo University Hospital–Rikshospitalet, Oslo, Norway
6. Department of Pediatrics, Oslo University Hospital–Rikshospitalet, Oslo, Norway
7. Department of Pediatric Research, Oslo University Hospital–Rikshospitalet, Oslo, Norway
8. Intervention Center, Oslo University Hospital–Rikshospitalet, Oslo, Norway