The profile system: friend or foe?
D054598:Blue Cross Blue Shield Insurance Plans / Q000191:economics*; D002170:Canada; D004469:Economics, Hospital / Q000639:trends; D005249:Fees and Charges / Q000639:trends; D007357:Insurance, Physician Services / Q000191:economics*; D007603:Jurisprudence; D009493:Neurosurgery / Q000191:economics*; D014481:United States