Drugs: hard and soft distinguished.
D000661:Amphetamine; D002188:Cannabis; D003042:Cocaine; D003061:Codeine; D004335:Drug and Narcotic Control; D003932:Heroin; D006801:Humans; D008238:Lysergic Acid Diethylamide; D009020:Morphine; D019966:Substance-Related Disorders / Q000517:prevention & control*; D006113:United Kingdom
D003932:Heroin; D009020:Morphine; D008238:Lysergic Acid Diethylamide; D000661:Amphetamine; D003042:Cocaine; D003061:Codeine