1. Indiana University School of Public Health, Bloomington, Indiana, USA.
2. Division of Infectious Diseases, Emory University School of Medicine, Atlanta, Georgia, USA.
3. Emory University Rollins School of Public Health, Atlanta, Georgia, USA.
4. Grady Health System, Atlanta, Georgia, USA.
5. Emory University, Office of Information Technology, IT Data Solutions, Atlanta, Georgia, USA.