1. Department of Nephrology Ullevål; Oslo University Hospital; Oslo Norway
2. Department of Transplant Medicine Rikshospitalet; Oslo University Hospital; Oslo Norway
3. Department of Neuropsychiatry and Psychosomatic Medicine Rikshospitalet; Oslo University Hospital; Oslo Norway
4. Institute of Medical Microbiology Rikshospitalet; Oslo University Hospital; Oslo Norway
5. Faculty of Medicine; University of Oslo; Oslo Norway