Are US physicians to be gatekeepers in $1 billion-a-day business?
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D003363:Cost Control; D003695:Delivery of Health Care / Q000191:economics / Q000639:trends*; D006801:Humans; D007348:Insurance, Health / Q000191:economics / Q000639:trends*; D010817:Physician-Patient Relations; D010820:Physicians; D014481:United States