1. Division of Critical care and Emergency Medicine Oslo University Hospital Oslo Norway
2. Section for Clinical Immunology and Infectious diseases Oslo University Hospital Oslo Norway
3. Research Institute for Internal Medicine University of Oslo Oslo Norway
4. Oslo Hospital Pharmacy Oslo Norway
5. Department of Anesthesiology Nordland Hospital Bodø Norway
6. Department of Microbiology Oslo University Hospital Oslo Norway
7. Oslo Center for Biostatistics and Epidemiology Department of Biostatistics Faculty of Medicine University of Oslo Oslo Norway
8. Department of Infectious Diseases Oslo University Hospital Oslo Norway