1. Integrated BioTherapeutics Inc., Rockville, Maryland
2. University of Texas Medical Branch, Galveston
3. Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba
4. Optimum Statistics Inc., Winnipeg, Manitoba, Canada
5. Departments of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri
6. US Army Medical Research Institute of Infectious Diseases, Frederick, Maryland