1. Division of Endocrinology, Diabetes, and Metabolism (E.A.D.F., A.S., J.R.G.), Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts 02215;
2. Department of Endocrinology (E.A.D.F., J.R.G.), Harvard Vanguard Medical Associates, Boston, Massachusetts 02215;
3. Department of Endocrinology (A.S.), Signature Healthcare, Brockton, Massachusetts 02301;
4. Department of Radiology (M.R.M.S.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215