Drug pollution--the problem of abuse.
D000328:Adult; D000367:Age Factors; D002188:Cannabis / Q000494:pharmacology; D002540:Cerebral Cortex / Q000187:drug effects; D002648:Child; D004335:Drug and Narcotic Control; D005194:Family Practice; D006801:Humans; D009497:Neurotic Disorders / Q000139:chemically induced; D011605:Psychoses, Substance-Induced / Q000209:etiology; D012940:Social Problems; D013019:South Africa; D019966:Substance-Related Disorders; D014115:Toxemia / Q000209:etiology