1. Department of Endocrinology, Diabetes, and Clinical Nutrition (K.C.J.Y., D.M.C.), Oregon Health and Science University, Portland, Oregon 97239
2. Neuroendocrine Unit (B.M.K.B.), Massachusetts General Hospital, Boston, Massachusetts 02114
3. Division of Endocrinology, Metabolism, and Molecular Medicine (M.E.M.), Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611