Effect of a gatekeeper plan on health services use and charges: a randomized trial.


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  2. Effect of a gatekeeper plan on health services use and charges: a randomized trial.


  3. Effect of a gatekeeper plan on health services use and charges: a randomized trial.

Martin DP, Diehr P, Price KF, Richardson WC. Effect of a gatekeeper plan on health services use and charges: a randomized trial. Am J Public Health. 1989 Dec;79(12):1628-32.

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