Collective negotiation through PPOs.
Struthers
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MS
D003098:Collective Bargaining; D006801:Humans; D007348:Insurance, Health / Q000191:economics / Q000458:organization & administration; D007349:Insurance, Health, Reimbursement; D010820:Physicians; D011243:Preferred Provider Organizations / Q000191:economics / Q000458:organization & administration; D014481:United States; D014485:United States Federal Trade Commission