1. From the Division of Metabolism, Endocrinology, and Nutrition, Department of Medicine (A.F.A., S.H.M., J.D.B.); Division of General Internal Medicine, Department of Medicine (M.J.M); Department of Epidemiology and Institute for Public Health Genetics, School of Public Health and Community Medicine (M.A.A.); and Division of Medical Genetics, Department of Medicine, and Department of Genome Sciences (A.G.M.), University of Washington, Seattle, Wash.