1. SeraCare Life Sciences, Inc., Gaithersburg, Maryland.
2. U.S. Military HIV Research Program, Henry M. Jackson Foundation for the Advancement of Military Medicine, Rockville, Maryland.
3. U.S. Food and Drug Administration, CBER, Bethesda, Maryland.
4. U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Rockville, Maryland.
5. South African National Blood Service, Gauteng, South Africa.
6. American Red Cross, Scientific Support Office, Gaithersburg, Maryland.
7. Department of Infectious Disease/University of São Paulo, São Paulo, Brazil.
8. Institute of Haematology and Blood Transfusion Medicine, Warsaw, Poland.
9. Blood Systems Research Institute, San Francisco, California.
10. Henry M. Jackson Foundation, Contractor to the Division of AIDS, NIH, Bethesda, Maryland.