From the Centers for Disease Control and Prevention. Cigarette smoking among adults--United States, 1991.
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D015995:Prevalence; D012907:Smoking / Q000453:epidemiology* / Q000639:trends; D014481:United States / Q000453:epidemiology