1. Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention
2. Atlanta Research and Education Foundation, Atlanta, Georgia
3. Wadsworth Center, New York State Health Department, Albany, New York
4. Hospital of Saint Raphael, New Haven, Connecticut
5. Maryland Department of Health and Mental Hygiene, Baltimore, Maryland
6. University of New Mexico Health Sciences Center, Albuquerque, New Mexico
7. Tennessee Department of Health, Nashville, Tennessee
8. Georgia Public Health Laboratory, Atlanta, Georgia
9. Minnesota Department of Health, St. Paul, Minnesota
10. Divison of Foodborne, Bacterial, and Mycotic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia