Marijuana and mutism.
D000328:Adult; D002188:Cannabis; D004305:Dose-Response Relationship, Drug; D006801:Humans; D008297:Male; D009155:Mutism / Q000139:chemically induced*; D011605:Psychoses, Substance-Induced / Q000209:etiology; D012907:Smoking; D013060:Speech; D019966:Substance-Related Disorders; D014705:Verbal Behavior