Institution: | 1. Center for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.;2. Department of Periodontology, School of Dentistry, University of North Carolina at Chapel Hill.;3. Department of Biostatistics, School of Public Health, University of North Carolina at Chapel Hill.;4. University of North Carolina Nutrition Research Institute and Department of Nutrition, University of North Carolina at Chapel Hill, Kannapolis, NC. |