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Has the Use of Physician Gatekeepers Declined among HMOs? Evidence from the United StatesFang, Hai; Hong, Liu; Rizzo, John A. · SSRN Electronic Journal · 2008
Special Issue on Provider Payment Incentives || Has the Use of Physician Gatekeepers Declined among Hmos? Evidence from the United StatesHai Fang, Hong Liu and John A. Rizzo · International Journal of Health Care Finance and Economics · 2009