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Subject
- Prevention[remove]109
- Drug abuse84
- Drug use48
- Youth39
- Marijuana25
- Treatment19
- Research18
- Substance-Related Disorders11
- AIDS (Disease)10
- Substance abuse10
- prevention & control10
- HIV infections8
- Physiological effect8
- National Institute on Drug Abuse6
- Diseases5
- Drug addicts5
- Health aspects4
- Intravenous drug abuse4
- Study and teaching4
- Adolescence3