title: Revoking HMOs' tax exemptions illegal--senator.
authors: L
authors: L
authors: Wagner
mesh_terms: D006279:Health Maintenance Organizations / Q000191:economics* / Q000331:legislation & jurisprudence; D007193:Independent Practice Associations / Q000191:economics / Q000331:legislation & jurisprudence; D013660:Taxes / Q000331:legislation & jurisprudence*; D014481:United States