1. Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, Tennessee;
2. Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee;
3. Division of Diabetes, Obesity, and Metabolism, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon;
4. Department of Neurobiology, Harvard Medical School, Boston, Massachusetts;
5. Department of Medicine, University of Massachusetts, Worcester, Massachusetts;
6. Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee; and
7. Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee