title: Geographic market definition critical to monopolization claim. Morgenstern v. Wilson.
mesh_terms: D016363:Antitrust Laws; D002318:Cardiovascular Diseases / Q000628:therapy; D004465:Economic Competition; D006801:Humans; D007882:Legislation, Hospital; D008389:Marketing of Health Services / Q000331:legislation & jurisprudence*; D009329:Nebraska; D011357:Product Line Management / Q000191:economics / Q000331:legislation & jurisprudence; D012017:Referral and Consultation