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Self Administration
Double-Blind Method
Psychomotor Performance
Questionnaires
Marijuana Smoking
Smoking
Social Behavior
Cocaine
Memantine
Tetrahydrocannabinol
Excitatory Amino Acid Antagonists
Drug Dose Response Relationship
Analysis of Variance
Cocaine-Related Disorders
Substance Withdrawal Syndrome
Heart Rate
Blood Pressure
Eating
Sleep
Drug Tolerance
Co-Publications
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