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Dyfyniad Arddull ChicagoBaker, Laurence C. HMOs and Fee-for-service Health Care Expenditures: Evidence from Medicare. Cambridge: National Bureau of Economic Research, 1995.
Dyfyniad MLABaker, Laurence C. HMOs and Fee-for-service Health Care Expenditures: Evidence from Medicare. National Bureau of Economic Research, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.