title: Notes on the spectrum of opiate use.
mesh_terms: D000328:Adult; D004812:Epidemiologic Methods; D006556:Heroin Dependence / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008887:Military Medicine; D011640:Public Policy; D013997:Time Factors; D014481:United States; D014728:Veterans; D014744:Vietnam