1. California State University, Fullerton, College of Health and Human Development, Department of Health Science, Fullerton, California.
2. Indiana University, Fairbanks School of Public Health, Department of Epidemiology and Environmental Health Science, Indianapolis, Indiana.
3. University of Illinois at Chicago, College of Dentistry, Department of Oral Medicine and Diagnostic Sciences, Chicago, Illinois.
4. University of Illinois at Chicago, College of Dentistry, Center for Molecular Biology of Oral Diseases, Chicago, Illinois.
5. Jesse Brown Veteran Affairs Medical Center, Chicago, Illinois.