1. Institute of Clinical Medicine University of Oslo Oslo Norway
2. Department of Anaesthesiology Oslo University Hospital Oslo Norway
3. Department of Acute Medicine Oslo University Hospital Oslo Norway
4. Department of Research and Development Oslo University Hospital Oslo Norway
5. Oslo Centre for Biostatistics and Epidemiology Oslo University Hospital Oslo Norway
6. Department of Radiology Oslo University Hospital Oslo Norway
7. Department of Haematology Oslo University Hospital Oslo Norway