Drug sampling: perpetuating an unjust health care system?
D011307:Drug Prescriptions / Q000191:economics*; D006297:Health Services Accessibility / Q000191:economics* / Q000331:legislation & jurisprudence; D006801:Humans; D006973:Hypertension / Q000188:drug therapy; D017057:Medically Uninsured; D014481:United States