1. USDA/Agricultural Research Service Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX
2. Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA
3. Washington University School of Medicine, St. Louis, MO
4. Pennington Biomedical Research Center, Baton Rouge, LA
5. Duke Clinical Research Institute, Duke University, Durham, NC