Medicare benefit still not accurately defined.
Gustafson
Paul R
PR
D000544:Alzheimer Disease / Q000628:therapy*; D004608:Eligibility Determination; D006738:Hospices / Q000706:statistics & numerical data*; D006801:Humans; D007342:Insurance Benefits / Q000191:economics*; D018447:Medical Futility; D006278:Medicare / Q000191:economics*; D014481:United States