Medicare's effects on medical care. The Hospital Utilization Project of Pennsylvania.
D000368:Aged; D001330:Electronic Data Processing; D006761:Hospitals / Q000706:statistics & numerical data*; D006801:Humans; D008499:Medical Records; D006278:Medicare; D008722:Methods; D010414:Pennsylvania; D012866:Skilled Nursing Facilities / Q000706:statistics & numerical data; D014600:Utilization Review