1. Hawaii Center for AIDS, University of Hawaii, Honolulu, Hawaii.
2. Department of Tropical Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii.
3. Department of Internal Medicine, Bridgeport Hospital-Yale New Haven Health, Bridgeport, Connecticut.
4. Blood Systems Research Institute, San Francisco, California.
5. Department of Laboratory Medicine, University of California San Francisco, San Francisco, California.