RT Journal
A1 Lopez MF, Compton WM, Volkow ND
T1 CHanges in cigarette and illicit drug use among us teenagers
JF Archives of Pediatrics & Adolescent Medicine
JO Archives of Pediatrics & Adolescent Medicine
YR 2009
FD September 7
VO 163
IS 9
SP 869
OP 870
DO 10.1001/archpediatrics.2009.156
UL http://dx.doi.org/10.1001/archpediatrics.2009.156
AB 
Tobacco has been the most typical first drug used by youth in the United States, and rates of its use generally have been much higher than rates of illicit substances among youth. While tobacco use remains a major public health problem, dramatic strides have been made in the past 10 years in reducing the prevalence of use, particularly among teenagers