Medicare HMOs. Risk retreat.
Greene
J
J
D000368:Aged; D002017:Budgets / Q000331:legislation & jurisprudence; D006279:Health Maintenance Organizations / Q000191:economics*; D006801:Humans; D006278:Medicare / Q000458:organization & administration*; D011907:Rate Setting and Review; D020414:Risk Sharing, Financial; D014481:United States