1. Divison of Pulmonary, Critical Care and Sleep Medicine, University of Washington School of Medicine, Seattle
2. Divison of Epidemiology, University of Washington School of Public Health, Seattle
3. Division of Hematology and Oncology, Portland
4. Division of Neuropathology, Oregon Health and Science University, Portland
5. Division of Allergy and Infectious Diseases, University of Washington School of Medicine, Seattle