1. Division of Endocrinology, Metabolism, and Nutrition, Mayo Clinic, Rochester, Minnesota.
2. Endocrinology and Metabolism Division, Walter Reed Army Medical Center, Washington, District of Columbia.
3. Division of Endocrinology, The Johns Hopkins University School of Medicine, Baltimore, Maryland.
4. Endocrine Division, Harvard Vanguard Medical Associates, Boston, Massachusetts.
5. Western Slope Endocrinology, Grand Junction, Colorado.
6. The Thyroid Unit, North Shore University Hospital, Manhassett, New York.
7. Department of Endocrinology, Aarhus University Hospital, Aalborg, Denmark.
8. Division of Nuclear Medicine, Department of Radiology and Division of Endocrinology, Department of Medicine, Stanford University School of Medicine, Stanford, California.
9. Department of Pediatrics, Yale Pediatric Thyroid Center, New Haven, Connecticut.
10. Massachusetts General Hospital, Boston, Massachusetts.
11. Divisions of Endocrine Surgery and Surgical Oncology, Yale University School of Medicine, New Haven, Connecticut.