National high school survey finds resurgence in marijuana use and increased tobacco use.
D000293:Adolescent; D003430:Cross-Sectional Studies; D005260:Female; D005544:Forecasting; D006801:Humans; D015994:Incidence; D008297:Male; D002189:Marijuana Abuse / Q000453:epidemiology*; D012907:Smoking / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology