1. Department of Pediatrics (A.M.), Boston Medical Center, Boston, Massachusetts 02118
2. Division of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine, and Division of General Pediatrics (A.M., H.B., M.F.H.), Boston Medical Center, Boston, Massachusetts 02118
3. Department of Epidemiology and Biostatistics (S.D.M.), University of Illinois Chicago School of Public Health, Chicago, Illinois 60612
4. Department of Medicine (T.C.C.), Boston Medical Center, Boston, Massachusetts 02118
5. Department of Medicine, Physiology, and Biophysics, Boston University School of Medicine (M.F.H.), Boston University Medical Center, Boston, Massachusetts 02118