1. Department of Surgery, University of Washington, Seattle, Washington, USA
2. University of Washington School of Medicine, Seattle, Washington, USA
3. Department of Medicine, Divisions of Allergy & Infectious Diseases, University of Washington, Seattle, Washington, USA
4. Division of Trauma and Critical Care, Department of Surgery, University of Washington, Harborview Medical Center, Seattle, Washington, USA
5. Department of Epidemiology, University of Washington, Seattle, Washington, USA