Cigarette smoking among youth--United States, 1989.
D000293:Adolescent; D002648:Child; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D011159:Population Surveillance; D044469:Racial Groups; D012907:Smoking / Q000453:epidemiology*; D000074606:Smoking Prevention; D014481:United States / Q000453:epidemiology