From the Centers for Disease Control and Prevention. Trends in cigarette smoking among high school students--United States, 1991-2001.
D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D012574:Schools / Q000706:statistics & numerical data; D012907:Smoking / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology