title: Medicare and HMOs: a first look, with disturbing findings.
mesh_terms: D014487:Centers for Medicare and Medicaid Services, U.S.; D003284:Contract Services / Q000592:standards; D006279:Health Maintenance Organizations / Q000592:standards*; D006278:Medicare / Q000331:legislation & jurisprudence*; D012306:Risk; D014481:United States; D014483:United States Dept. of Health and Human Services