1. Department of Dermatology, Oslo University Hospital, Oslo, Norway
2. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3. Cancer Registry of Norway, Oslo, Norway
4. Department of Nephrology, Oslo University Hospital, Oslo, Norway
5. Department of Cardiology, Oslo University Hospital, Oslo, Norway
6. Department of Gastroenterology and Hepatology, Oslo University Hospital, Oslo, Norway
7. Department of Respiratory Medicine, Oslo University Hospital, Oslo, Norway