title: Educational levels, ethnic origin and age.
authors.forename: J B
authors.initials: JB
authors.lastname: Reid
mesh_terms: D000367:Age Factors; D004522:Educational Status; D005006:Ethnicity / Q000706:statistics & numerical data*; D012042:Registries; D013679:Technology, Radiologic / Q000706:statistics & numerical data*; D014481:United States