title: The race, class and irreversibility hypotheses. Myths and research about heroin.
mesh_terms: D000328:Adult; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D008297:Male; D044469:Racial Groups; D012106:Research; D012923:Social Class; D013997:Time Factors; D014481:United States