title: Squaring a difficult circle.
authors: Yorkshire Regional Health Authority.
authors: F
authors: F
authors: Eskin
authors: A
authors: A
authors: Bull
mesh_terms: D000367:Age Factors; D004194:Disease / Q000145:classification*; D004739:England; D006301:Health Services Needs and Demand; D006305:Health Status Indicators; D006801:Humans; D013222:State Medicine