Concerning heroin use and official records.
D000328:Adult; D005006:Ethnicity; D003932:Heroin; D006801:Humans; D008297:Male; D008800:Mexico; D008923:Missouri; D011996:Records; D012926:Social Control, Formal; D019966:Substance-Related Disorders / Q000517:prevention & control*
D003932:Heroin