1. Department of Biochemistry School of Medicine, University of North Carolina, Chapel Hill, North Carolina, and Laboratory of Nutrition and Endocrinology, National Institute of Arthritis and Metabolic Diseases, The National Institutes of Health, Bethesda, Maryland
2. Department of Pathology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, and Laboratory of Nutrition and Endocrinology, National Institute of Arthritis and Metabolic Diseases, The National Institutes of Health, Bethesda, Maryland