Increased costs and rates of use in the California workers' compensation system as a result of self-referral by physicians.
Cohen
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D002140:California; D016265:Conflict of Interest; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data*; D012017:Referral and Consultation / Q000191:economics*; D014942:Workers' Compensation / Q000191:economics*