1. Division of Infectious Diseases, Kaiser Permanente Mid-Atlantic States, Washington, District of Columbia.
2. Kaiser Permanente, Mid-Atlantic Permanente Research Institute, Rockville, Maryland.
3. Kaiser Permanente HIV Initiative, Oakland, California.
4. Division of Research, Kaiser Permanente Northern California, Oakland, California.
5. Division of Infectious Diseases, Kaiser Permanente Northern California, Hayward, California.
6. Kaiser Permanente Southern California, Los Angeles Medical Center, Los Angeles, California.
7. Immunodeficiency Clinic, Kaiser Permanente Northwest, Portland, Oregon.
8. Division of Infectious Diseases, Kaiser Permanente Colorado, Denver, Colorado.
9. Division of Infectious Diseases, Kaiser Permanente Georgia, Atlanta, Georgia.
10. Kaiser Permanente, Oakland, California.