Defining geographic markets for hospital care.
D000407:Alabama; D001130:Arizona; D002391:Catchment Area, Health; D004465:Economic Competition / Q000331:legislation & jurisprudence*; D004467:Economics / Q000331:legislation & jurisprudence*; D006297:Health Services Accessibility; D006780:Hospitals, Rural / Q000706:statistics & numerical data; D006786:Hospitals, Urban / Q000706:statistics & numerical data; D008962:Models, Theoretical; D009096:Multi-Institutional Systems / Q000458:organization & administration*; D009329:Nebraska; D010414:Pennsylvania; D014481:United States; D014485:United States Federal Trade Commission