1. Pathology, Microbiology and Immunology, Vanderbilt University Medical Center , Nashville, Tennessee, USA
2. Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center , Nashville, Tennessee, USA
3. Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center , Nashville, Tennessee, USA
4. Department of Emergency Medicine, Vanderbilt University Medical Center , Nashville, Tennessee, USA