1. Research Institute for Internal Medicine (A.Q.-J., T.B.D., B.H., I.G.), Oslo University Hospital, Rikshospitalet, Norway.
2. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway (A.Q.-J., B.H.).
3. Division of Critical Care and Emergencies (T.B.D.), Oslo University Hospital, Rikshospitalet, Norway.
4. Department of Microbiology (M.B., I.A.), Oslo University Hospital, Rikshospitalet, Norway.
5. Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway (M.B.).