Tobacco use among middle and high school students--United States, 1999.
Healton
C
C
American Legacy Foundation, Washington, DC, USA.
Messeri
P
P
Reynolds
J
J
Wolfe
C
C
Stokes
C
C
Ross
J
J
Flint
K
K
Robb
W
W
Farrelly
M
M
D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012907:Smoking / Q000453:epidemiology*; D013334:Students / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology