title: Preparing for managed competition. Utilization of ophthalmologic services varies by state.
authors.forename: J C
authors.initials: JC
authors.lastname: Javitt
authors.forename: Y P
authors.initials: YP
authors.lastname: Chiang
mesh_terms: D006296:Health Services / Q000706:statistics & numerical data*; D006801:Humans; D008329:Managed Care Programs / Q000706:statistics & numerical data*; D006278:Medicare; D009885:Ophthalmology; D014481:United States