1. Division of Endocrinology, Diabetes, Metabolism and Nutrition (A.F.T., M.C., S.I., P.C., R.S.B.), Minnesota 55905
2. Division of Pediatric Endocrinology and Metabolism (S.K.), Mayo Clinic, Rochester, Minnesota 55905
3. Laboratory of Endocrinology and Receptor Biology (S.N., M.C.G.), National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-8029