1. Liver & Energy Metabolism Unit; Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health; Bethesda MD
2. Department of Medicine; Medstar Washington Hospital Center; Washington DC
3. Laboratory for Informatics Development; Biomedical Translational Research Information System, Clinical Center, National Institutes of Health; Bethesda MD
4. Biomedical and Metabolic Imaging Branch, National Institute of Diabetes and Digestive and Kidney Diseases; Bethesda MD