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Substance-Related Disorders
Marijuana Abuse
Alcoholism
Cocaine-Related Disorders
Opioid-Related Disorders
Risk Factors
Longitudinal Studies
Causality
Age Factors
Social Environment
Risk
Factor Analysis, Statistical
Young Adult
Street Drugs
Pennsylvania
Antisocial Personality Disorder
Residence Characteristics
Adolescent Behavior
Phenotype
Psychological Tests
Co-Publications
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