1. Roche Molecular Systems, Pleasanton, California, USA
2. Roche Molecular Systems, Basel, Switzerland
3. Department of Pediatrics, University of California, Los Angeles, Los Angeles, California, USA
4. TriCore Reference Laboratories, Albuquerque, New Mexico, USA
5. MetroHealth, Cleveland, Ohio, USA
6. The Miriam Hospital, Providence, Rhode Island, USA
7. Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
8. Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
9. Department of Medicine, University of Washington, Seattle, Washington, USA