Burden of prescription drug costs in the United States.
Curtiss
Frederic R
FR
D000368:Aged; D017850:Economics, Pharmaceutical / Q000639:trends*; D005853:Geriatrics / Q000191:economics*; D006801:Humans; D006278:Medicare / Q000191:economics*; D011306:Prescription Fees / Q000639:trends*; D014481:United States