1. Division of Population Health National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control and Prevention (CDC) Atlanta Georgia USA
2. Department of Periodontics and Oral Medicine University of Michigan School of Dentistry Ann Arbor Michigan USA
3. (Formerly) Distinguished Professor of Oral Biology and Microbiology; Director UB Center for Microbiome Research State University of New York (SUNY) University at Buffalo Amherst New York USA