1. Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine , Atlanta, Georgia , USA
2. Hubert Department of Global Health, Rollins School of Public Health, Emory University , Atlanta, Georgia , USA
3. Grady Healthcare System , Atlanta, Georgia , USA
4. Department of Pathology and Laboratory Medicine, Emory University School of Medicine , Atlanta, Georgia , USA
5. Grady Memorial Hospital, Clinical Laboratory , Atlanta, Georgia , USA