1. Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia2Epidemic Intelligence Service, Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, Georg
2. Epidemic Intelligence Service, Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, Georgia3Illinois Department of Public Health, Chicago, Illinois
3. Illinois Department of Public Health, Chicago, Illinois
4. Advocate Lutheran General Hospital, Park Ridge, Illinois
5. Cook County Department of Public Health, Oak Forest, Illinois
6. Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
7. Chicago Department of Public Health, Chicago, Illinois