title: Market definition key to antitrust regulations.
authors: Premier Hospitals Alliance, Westchester, IL.
authors: A
authors: A
authors: Solovy
mesh_terms: D004465:Economic Competition / Q000331:legislation & jurisprudence; D006739:Hospital Administration / Q000331:legislation & jurisprudence*; D006761:Hospitals; D007087:Illinois; D008389:Marketing of Health Services / Q000331:legislation & jurisprudence*; D011357:Product Line Management / Q000331:legislation & jurisprudence*; D014481:United States; D014485:United States Federal Trade Commission; D014768:Virginia