1. From the Institute of Clinical Medicine Faculty of Medicine University of Oslo OsloNorway
2. Department of Infectious Diseases Oslo University Hospital OsloNorway
3. Research Institute of Internal Medicine Oslo University Hospital OsloNorway
4. Department of Research and Development Division of Emergencies and Critical Care Oslo University Hospital OsloNorway
5. Department of Microbiology Oslo University Hospital OsloNorway
6. Department of Acute Medicine Oslo University Hospital Oslo Norway