title: Regionalizing cardiac catheterization: why it works.
mesh_terms: D002140:California; D002300:Cardiac Care Facilities / Q000706:statistics & numerical data*; D006328:Cardiac Catheterization / Q000191:economics*; D006782:Hospitals, Special / Q000706:statistics & numerical data*; D012017:Referral and Consultation; D012040:Regional Health Planning