1. Division of Critical Care Medicine, Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA.
2. Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA.
3. Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA.
4. Department of Orthopaedics and Sports Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA.
5. Department of Neurological Surgery, University of Washington School of Medicine, Seattle, WA 98195, USA.
6. Department of Pharmacy, Harborview Medical Center, University of Washington School of Pharmacy, Seattle, WA 98104, USA.
7. Department of Microbiology, University of Washington School of Medicine, Seattle, WA 98195, USA.
8. Clinical Microbiology Laboratory, Harborview Medical Center, Seattle, WA 98104, USA.