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Subject
- Drug abuse[remove]28
- Drug abuse--Epidemiology[remove]28
- Epidemiology[remove]28
- Medication abuse11
- Opioid abuse8
- Substance abuse8
- Substance abuse--Epidemiology8
- Opioids7
- Heroin6
- Heroin abuse6
- Marijuana5
- Cannabis4
- Youth--Drug use4
- Psychotropic drugs3
- Brazilian students2
- College students--Drug use2
- Drinking of alcoholic beverages2
- HIV-positive persons2
- Inhalant abuse2
- Mental health2