1. From the Division of Diabetes, Endocrinology and Metabolism, Departments of Medicine and Molecular & Cellular Biology, (A.P., K.W.S.K., L.L., V.Y., L.C.) Baylor College of Medicine, Houston, Tex, and Division of Clinical Immunology and Rheumatology, Department of Medicine, (M.A.M., A.J.S.) University of Alabama at Birmingham, Birmingham, Ala.