1. Diabetes and Obesity Center of Excellence (J.P.G., J.P.T., B.E.W., S.O.-I., D.A.S., M.E.M., J.D.F., M.W.S., G.J.M.), Department of Medicine, University of Washington, Seattle, Washington 98109
2. Veterans Affairs Puget Sound Health Care System (G.J.T.), Department of Veterans Affairs Medical Center, Seattle, Washington 98108