1. Department of Medicine, University of Washington, Seattle
2. Department of Rehabilitation Medicine, Mt Sinai School of Medicine, New York, New York
3. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle
4. Department of Neurology, Cleveland Clinic Foundation, Cleveland, Ohio
5. Department of Pathology, University of Washington, Seattle
6. Department of Pathology, University of Utah, Salt Lake City
7. Department of Pathology, University of Washington, Seattle10now with the Department of Pathology, Stanford University School of Medicine, Stanford, California
8. Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois
9. Department of Pathology, Rush University Medical Center, Chicago, Illinois
10. Center for Health Studies, Group Health Research Institute, Seattle, Washington