title: Use of alcohol, tobacco, caffeine and drugs by undergraduates.
mesh_terms: D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking; D000434:Alcoholic Beverages; D002110:Caffeine; D003069:Coffee; D003604:Czechoslovakia; D006801:Humans; D010947:Plants, Toxic; D012907:Smoking; D013334:Students; D019966:Substance-Related Disorders; D014026:Nicotiana
chemical_list: D003069:Coffee; D002110:Caffeine