Students' use of cocaine drops, but cigarette and alcohol use remains high.
D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking / Q000453:epidemiology*; D003042:Cocaine; D006801:Humans; D012907:Smoking / Q000453:epidemiology* / Q000639:trends; D013334:Students / Q000706:statistics & numerical data*; D019966:Substance-Related Disorders / Q000453:epidemiology*
D003042:Cocaine