1. Obesity Research Center, University of Tennessee, Knoxville, TN 37996
2. Department of Animal Science, University of Tennessee, Knoxville, TN 37996
3. Department of Nutrition, University of Tennessee, Knoxville, TN 37996
4. Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI 48824
5. Department of Pathobiology, University of Tennessee, Knoxville, TN 37996
6. Jean Meyer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111