Primary health care for urban children and youth: the role of local health departments.
D000293:Adolescent; D002648:Child; D002669:Child Welfare / Q000706:statistics & numerical data*; D002675:Child, Preschool; D006262:Health; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010372:Pediatrics; D011320:Primary Health Care; D011635:Public Health Administration; D014481:United States; D014504:Urban Health