1. Department of Ambulatory Care and Prevention (E.O.), Harvard Medical School and Harvard Pilgrim Health Care, Boston, Massachusetts 02215
2. Section of Endocrinology, Diabetes, and Nutrition (L.E.B., S.L.L., E.N.P.), Boston University Medical Center, Boston, Massachusetts 02118
3. Department of Obstetrics and Gynecology (D.P.), Harvard Vanguard Medical Associates, Boston, Massachusetts 02215-3904
4. New England Newborn Screening Program (M.L.M.), University of Massachusetts Medical School, Boston, Massachusetts 01655