1. Beckman Coulter Microbiology , West Sacramento, California, USA
2. Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine , Chapel Hill, North Carolina, USA
3. Division of Laboratory Medicine, Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center , Nashville, Tennessee, USA
4. Department of Pathology and Laboratory Medicine, Robert Wood Johnson University Hospital , New Brunswick, New Jersey, USA
5. Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention , Atlanta, Georgia, USA
6. Department of Microbiology, LabCorp Seattle , Seattle, Washington, USA
7. Division of Medical Microbiology, Department of Pathology, Johns Hopkins School of Medicine , Baltimore, Maryland, USA
8. Division of Infectious Diseases, Department of Medicine, Johns Hopkins School of Medicine , Baltimore, Maryland, USA