title: Did the invisible hand rock the cradle?
authors.forename: Archie
authors.initials: A
authors.lastname: Kerr
mesh_terms: D002675:Child, Preschool; D004194:Disease; D006801:Humans; D007223:Infant; D010343:Patient Admission; D011203:Poverty; D012107:Research Design / Q000706:statistics & numerical data*