1. Servicio de Endocrinologia (G.S.), Hospital Clínic de Barcelona, Barcelona, Spain
2. Neuroendocrine Clinical Center (W.F., L.K., K.P., D.H., A.K.), Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114
3. Columbia College of Physicians and Surgeons (P.F.), New York, New York
4. Pituitary Center (V.B.), Cedars Sinai Hospital, Los Angeles, California
5. Division of Endocrinology and Metabolism (E.D.), University of Michigan, Ann Arbor, Michigan 48109
6. Division of Endocrinology (S.S.), New York University Medical Center, New York, New York 10016
7. Department of Internal Medicine (Endocrinology and Metabolism) (M.L.V.), University of Virginia Health System, Charlottesville, Virginia 22908