Effect of caffeine on coffee drinking.
D000328:Adult; D000368:Aged; D002110:Caffeine / Q000494:pharmacology*; D003069:Coffee; D004327:Drinking Behavior / Q000187:drug effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
D003069:Coffee; D002110:Caffeine