1. Department of Periodontology; School of Dentistry; University of North Carolina at Chapel Hill; Chapel Hill NC USA
2. Department of Dental Research; School of Dentistry; University of North Carolina at Chapel Hill; Chapel Hill NC USA
3. MeHarry School of Dentistry; Medical College; Nashville TN USA
4. Institute of Global Health and Infectious Diseases; School of Medicine; University of North Carolina at Chapel Hill; Chapel Hill NC USA
5. Department of Microbiology and Immunology; School of Medicine; University of North Carolina at Chapel Hill; Chapel Hill NC USA
6. Department of Dental Ecology; School of Dentistry; University of North Carolina at Chapel Hill; Chapel Hill NC USA