title: A systems approach to drug user services.
mesh_terms: D003156:Community Mental Health Services; D003201:Computers; D003695:Delivery of Health Care; D005555:Forensic Psychiatry; D006801:Humans; D007603:Jurisprudence; D008962:Models, Theoretical; D009657:North Carolina; D012926:Social Control, Formal; D019966:Substance-Related Disorders; D013597:Systems Analysis