The misperception of managed care PPOs by pharmaceutical companies.
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D004345:Drug Industry / Q000639:trends*; D011307:Drug Prescriptions / Q000191:economics; D004465:Economic Competition; D005569:Formularies as Topic; D006801:Humans; D007356:Insurance, Pharmaceutical Services / Q000191:economics; D011243:Preferred Provider Organizations / Q000458:organization & administration*; D014481:United States