title: At a glance. Percentage of Americans with commercial health insurance enrolled in HMOs in selected metropolitan areas.
mesh_terms: D003625:Data Collection; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006801:Humans; D007348:Insurance, Health / Q000706:statistics & numerical data*; D014481:United States; D014505:Urban Population / Q000706:statistics & numerical data