1. Section of Infectious Diseases, Rush University Medical Center, Chicago, Illinois.
2. Center for Biostatistics in AIDS Research, Harvard School of Public Health, Boston Massachusetts.
3. Departments of Medicine, Microbiology & Immunology, Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
4. Department of Medicine, University of California–San Francisco, San Francisco, California.
5. Department of Medicine, University of Alabama, Birmingham, Alabama.
6. University of Colorado Health Sciences Center, Aurora, Colorado.
7. Department of Radiology, University of Michigan, Ann Arbor, Michigan.
8. Pfizer, Inc., New York, New York.
9. Serono, Inc., Rockland, Massachusetts.
10. Social and Scientific Systems, Inc., AACTG Operations Center, Bethesda, Maryland.
11. Department of Internal Medicine/Infectious Diseases, University of California Davis Health System, Sacramento, California.