1. Centers for Disease Control and Prevention/Division of Oral
Health/Surveillance, Investigations, and Research Branch, 4770 Buford Highway, MSF10,
Chamblee, GA 30341, USA;
2. Wallace H. Coulter School of Biomedical Engineering, 2101 Whitaker
Building, 313 Ferst Dr., Georgia Tech, Atlanta, GA 30332-0535, USA;
3. School of Dentistry, University of North Carolina, Chapel Hill, NC
27599-7450, USA;
4. Dental Health Services Research Unit, Dundee DD24BF, Scotland, UK;
5. Oral Health Research Institute, Indiana University School of
Dentistry, 415 Lansing Street, Indianapolis, IN 46202, USA;
6. American Dental Association, 211 E. Chicago Ave., Chicago, IL 60611,
USA;
7. Department of Health Policy and Administration, The University of
North Carolina at Chapel Hill, 1105F McGavran-Greenberg Hall, CB#7411, Chapel Hill,
NC 27599-7411, USA; and