1. Department of Pathology; Stanford University School of Medicine; Stanford California
2. Group Health Research Institute; Seattle Washington
3. Department of Pathology; University of Vermont College of Medicine and Vermont Cancer Center; Burlington Vermont
4. Giesel School of Medicine at Dartmouth, Lebanon, New Hampshire; Dartmouth Medical School/Norris Cotton Cancer Center; Lebanon New Hampshire
5. Oregon Health & Science University and Providence Cancer Center; Portland Oregon
6. University of Vermont; Burlington Vermont
7. University of California; San Francisco San Francisco California
8. Department of Family Medicine and Public Health & Preventive Medicine; Oregon Health & Science University; Portland Oregon
9. Group Health Research Institute, Seattle, Washington; University of Washington; Seattle Washington
10. Department of Medicine; University of Washington; Seattle Washington