1. Division of Endocrinology, Diabetes and Metabolism (P.P.S., F.B., M.M., R.L., S.S., K.C.), University of Florida, Gainesville, Florida 32610
2. Division of Endocrinology, Diabetes and Metabolism (P.P.S., F.B., M.M., D.B., S.S., K.C.), Malcom Randall Veterans Administration Medical Center (VAMC), Gainesville, Florida 32608
3. Division of Diabetes (B.O., J.H., K.C.), the University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229
4. Division of Diabetes (B.O., J.H., K.C.), San Antonio, Texas 78229
5. Division of Hepatology (A.W.), Audie L. Murphy VAMC, San Antonio, Texas 78229