1. Department of Microbial Pathogenesis, University of Maryland Dental School, 650 W. Baltimore Street, Baltimore, Maryland 21201
2. Institute for Genome Sciences and Department of Microbiology & Immunology, University of Maryland School of Medicine, 801 West Baltimore Street, Baltimore, Maryland 21201
3. Division of Infectious Diseases & Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Atlanta, Georgia 30322
4. Department of Microbiology and Immunology, University of Tennessee Health Science Center, 920 Madison Avenue, Memphis, Tennessee 38163