1. Division of Immunology, Tulane National Primate Research Center , Covington, Louisiana , USA
2. Center for Biostatistics in AIDS Research, Harvard T. H. Chan School of Public Health , Boston, Massachusetts , USA
3. Department of Epidemiology, Harvard T. H. Chan School of Public Health , Boston, Massachusetts , USA
4. Center for Human Toxicology, Department of Pharmacology and Toxicology, University of Utah , Salt Lake City, Utah , USA
5. Department of Psychiatry, Columbia University, Irving Medical Center , New York, New York , USA
6. HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute , New York, New York , USA
7. Department of Sociomedical Science, Columbia University Mailman School of Public Health , New York, New York , USA
8. Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine , Baltimore, Maryland , USA
9. Department of Medicine, Division of Clinical Pharmacology, Johns Hopkins University School of Medicine , Baltimore, Maryland , USA
10. Department of Neurosciences, University of California, San Diego , La Jolla, California , USA
11. Consultant, AIDS Clinical Trials Group , Los Angeles, California , USA
12. Consultant, Chronic HIV Infection in Aging and NeuroAIDS Center, University of Nebraska Medical Center , Omaha, Nebraska , USA
13. Department of Medicine, Albert Einstein College of Medicine , Bronx, New York , USA
14. Department of Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado , USA