1. Department of Food Science and Nutrition, University of Minnesota, Minneapolis–St. Paul, Minnesota;
2. Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis–St. Paul, Minnesota; and
3. Experimental Diabetes, Metabolism, and Nutrition Section, Diabetes Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland.