1. Division of Endocrinology, Diabetes and Hypertension (P.C., C.V., L.H.P., G.N.P., T.M.Y., G.A., M.T.-G., E.R.M., A.R.-R., J.S.W., G.W., J.R.R.), Harvard Medical School, Boston, Massachusetts 02115
2. Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, and Department of Laboratory Medicine (C.V., A.R., G.N.P., E.R.M.), Boston Children's Hospital and Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115