Multiple drug use in a sample of experienced marijuana smokers.
D000328:Adult; D001741:Black or African American; D000661:Amphetamine; D001290:Attitude; D001463:Barbiturates; D002188:Cannabis; D005260:Female; D006213:Hallucinogens; D003932:Heroin; D006801:Humans; D007087:Illinois; D008297:Male; D009892:Opium; D011203:Poverty; D011330:Prisons; D012737:Sex Factors; D013334:Students; D019966:Substance-Related Disorders; D014495:Universities
D001463:Barbiturates; D006213:Hallucinogens; D003932:Heroin; D009892:Opium; D000661:Amphetamine