1. Section of Endocrinology, Diabetes, and Metabolism (J.C.-C., M.D.G., N.K.P., D.G., R.D.K.), Department of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612;
2. Research and Development Division (J.C.-C., M.D.G., N.K.P., D.G., R.D.K.), Jesse Brown Veterans Affairs Medical Center,
3. Division of Endocrinology, Diabetes, and Metabolism (M.A., R.S.), School of Medicine, Johns Hopkins University, Baltimore, Maryland 21218
4. Department of Cell Biology, Physiology, and Immunology (M.D.G., R.M.L.), University of Cordoba, Instituto Maimónides de Investigación Biomédica de Córdoba/Hospital Universitario Reina Sofia and Centros de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutricion, Cordoba 14014, Spain;