1. Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.
2. Division of Infectious Diseases, Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, South Carolina.
3. Critical Care Medicine Department, NIH Clinical Center, Bethesda, Maryland.
4. Clinical Center, Department of Laboratory Medicine, National Institutes of Health, Bethesda, Maryland.
5. Lipoprotein Metabolism Section, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland.
6. Division of Infectious Diseases, Institute of Human Virology, University of Maryland, Baltimore, Maryland.
7. St. Joseph's Hospital and Medical Center, Creighton University School of Medicine, Department of Hepatology, Phoenix, Arizona.
8. Gilead Sciences Inc., Foster City, California.