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Smoking
Adolescent Behavior
Marijuana Smoking
Substance-Related Disorders
Tobacco Use Disorder
Mental Disorders
United States
Longitudinal Studies
Sex Factors
Prevalence
Cohort Studies
Risk Factors
Ethnic Groups
Health Surveys
Age Factors
Cross-Sectional Studies
Comorbidity
Cocaine
Street Drugs
European Continental Ancestry Group
Co-Publications
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