1. Department of Endocrine Neoplasia and Hormonal Disorders (A.A.C., D.R.L., S.I.S.), The University of Texas MD Anderson Cancer Center, Houston, Texas 77030
2. Thyroid Unit (D.S.R.), Massachusetts General Hospital, Boston, Massachusetts 02114
3. Division of Endocrinology (J.J.), Department of Medicine, Georgetown University Medical Center, Washington, DC 20057
4. Division of Endocrinology and Metabolism (D.S.C., P.W.L., M.X.), The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205
5. Department of Radiation Oncology (J.D.B.), Princess Margaret Hospital, Toronto, ON M5G 2M9, Canada
6. Department of Internal Medicine (K.B.A.), Veterans Affairs Medical Center and University of Kentucky, Lexington, Kentucky 40502
7. Division of Endocrinology and Metabolism (H.G.F.), Sinai Hospital, Baltimore, Maryland 21215
8. Division of Endocrinology, Metabolism, and Diabetes (B.R.H.), University of Colorado School of Medicine, Aurora, Colorado 80045
9. Genzyme (J.M.), a Sanofi Company, Cambridge, Massachusetts 02142
10. Diabetes, Endocrinology, Obesity Branch (M.C.S.), National Institutes of Health, Bethesda, Maryland 20892
11. Departments of Head and Neck Surgery (D.L.S.), Cincinnati, Ohio 45219
12. Nuclear Medicine (H.R.M.), University of Cincinnati Medical Center, Cincinnati, Ohio 45219