title: The scope of illicit drug use in a Vietnam combat unit.
mesh_terms: D000328:Adult; D001290:Attitude; D002188:Cannabis; D003415:Crime; D004522:Educational Status; D003932:Heroin; D006556:Heroin Dependence / Q000453:epidemiology; D006801:Humans; D007360:Intelligence; D008297:Male; D008887:Military Medicine; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014481:United States; D014744:Vietnam
chemical_list: D003932:Heroin