Many seniors fail to claim benefit.
Wagner
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D000368:Aged; D003669:Deductibles and Coinsurance / Q000331:legislation & jurisprudence*; D005069:Evaluation Studies as Topic; D006801:Humans; D007344:Insurance Claim Reporting; D008484:Medicaid / Q000706:statistics & numerical data*; D011203:Poverty; D014481:United States