Human polydrug use: marihuana and alcohol.
D000328:Adult; D000437:Alcoholism / Q000150:complications / Q000453:epidemiology* / Q000503:physiopathology / Q000523:psychology; D002188:Cannabis; D003216:Conditioning, Operant; D006801:Humans; D008297:Male; D012201:Reward; D019966:Substance-Related Disorders / Q000150:complications / Q000453:epidemiology* / Q000503:physiopathology / Q000523:psychology