1. Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York, USA
2. Johns Hopkins Hospital, Baltimore, Maryland, USA
3. Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, Tennessee, USA
4. Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
5. Beckman Coulter, Inc., Sacramento, California, USA
6. Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
7. Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, New York, USA