1. Hawaii Center for AIDS, Department of Tropical Medicine, University of Hawaii, John A. Burns School of Medicine, Honolulu, Hawaii.
2. Nuffield Department of Clinical Medicine, University of Oxford, Oxford, United Kingdom.
3. Department of Immunology and Immunopathology, Kagawa University, Kagawa, Japan.
4. Blood Systems Research Institute, San Francisco, California.
5. Department of Laboratory Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California.
6. Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California.
7. Department of Epidemiology and Biostatistics, Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California.
8. HIV/AIDS Division, Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California.