title: British opiate users: I. People approaching London drug treatment centres.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000553:Ambulatory Care; D001290:Attitude; D003153:Community Health Services / Q000706:statistics & numerical data*; D003417:Criminal Psychology; D004522:Educational Status; D004651:Employment; D005190:Family; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008019:Life Style; D008131:London; D008297:Male; D009042:Motivation; D009892:Opium; D010551:Personality; D012737:Sex Factors; D019966:Substance-Related Disorders / Q000453:epidemiology*; D006113:United Kingdom
chemical_list: D009892:Opium