Marihuana "high"--a first-time effect?
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002188:Cannabis / Q000494:pharmacology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D012931:Social Environment; D019966:Substance-Related Disorders