1. Department of Medicine Harvard Medical School Boston Massachusetts USA
2. Department of Medicine Virginia Tech Carilion School of Medicine Roanoke Virginia USA
3. Salem Veterans Affairs Health Care System Salem Virginia USA
4. Atlanta Veterans Affairs Health Care System Decatur Georgia USA
5. Hubert Department of Global Health, Rollins School of Public Health Emory University Atlanta Georgia USA
6. Division of Infectious Diseases Emory University School of Medicine Atlanta Georgia USA
7. Emory Vaccine Center Atlanta Georgia USA