Chemical dependency: what exactly are we talking about?
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D001923:Brain Chemistry; D020022:Genetic Predisposition to Disease; D006801:Humans; D009329:Nebraska; D009786:Occupational Health Services; D011363:Professional Impairment / Q000523:psychology*; D012307:Risk Factors; D012931:Social Environment; D019966:Substance-Related Disorders / Q000209:etiology* / Q000517:prevention & control / Q000523:psychology*