1 Research Institute of Internal Medicine, Oslo, University Hospital, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway; K.G. Jebsen, TREC, University of Tromsø, Tromsø, Norway. Electronic address: [email protected].
2 Department of Infectious Diseases Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway.
4 Department of Acute Medicine Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway.
5 Department of Infectious Diseases Oslo, Norway; Regional Advisory Unit for Imported and Tropical Diseases, Oslo University Hospital, Norway.
6 Department of Microbiology Oslo, Norway.
7 Department of Microbiology Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway.
8 Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway; Dept of Internal Medicine, Drammen Hospital, Vestre Viken, Hospital Trust, Drammen, Norway.
9 Research Institute of Internal Medicine, Oslo, University Hospital, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway; Section of Clinical Immunology and Infectious Diseases Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Rikshospitalet, P. B. 4950 Nydalen, 0424 Oslo, Norway.