1. Diabetes and Obesity Center of Excellence (J.G., F.K., M.W.S., G.J.M.), Department of Medicine, University of Washington, Seattle, Washington 98195
2. Departments of Medicine and Neuroscience (G.J.S.), Diabetes Research and Training Center, Albert Einstein College of Medicine, Bronx, New York 10461
3. Department of Molecular Biosciences (P.J.H.), School of Veterinary Medicine, and Department of Nutrition, University of California, Davis, Davis, California 95616
4. Kovler Diabetes Center (C.J.R.), Department of Medicine, University of Chicago, Chicago, Illinois 60637