The secret of maternal and child health.
D002662:Child Health Services / Q000331:legislation & jurisprudence / Q000639:trends*; D006801:Humans; D008427:Maternal Health Services / Q000331:legislation & jurisprudence / Q000639:trends*; D011634:Public Health; D012946:Social Welfare; D014481:United States; D014483:United States Dept. of Health and Human Services