1. Division of Endocrinology and Metabolism (K.A.P., A.V., F.J.S.), Department of Medicine, Mayo Clinic, Rochester, Minnesota 55905
2. Division of Gastroenterologic and General Surgery (G.B.T., C.S.G.), Mayo Clinic, Rochester, Minnesota 55905
3. Departments of Radiology (C.C.R., J.W.C., J.C.A.), Mayo Clinic, Rochester, Minnesota 55905
4. Laboratory Medicine and Pathology (R.V.L.), Mayo Clinic, Rochester, Minnesota 55905