1. Departments of Infectious Diseases and Microbiology, Oslo University Hospital, Oslo, Norway
2. Department of Surgery, Nordland Hospital, Bodø, Norway
3. Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
4. Department of Radiology, Nordland Hospital, Bodø, Norway
5. Department of Anesthesiology, Nordland Hospital, Bodø, Norway
6. Institute of Clinical Medicine, University of Tromsø, Tromsø, Norway
7. Department of Medicine, Nordland Hospital, Bodø, Norway