title: The 1985 Dent memorial lecture. 'I need heroin'. Thirty years' experience of drug dependence and of the medical challenges at local, national, international and political level. What next?
mesh_terms: D049673:History, 20th Century; D006801:Humans; D007880:Legislation, Drug; D013222:State Medicine; D019966:Substance-Related Disorders / Q000266:history* / Q000523:psychology / Q000628:therapy; D006113:United Kingdom; D014944:World Health Organization