@article{Chen2012,
author = {Chen, P.  and Jacobson, K.C. },
title= {Developmental trajectories of substance use from early adolescence to young adulthood: Gender and racial/ethnic differences},
year = {2012},
doi = {10.1016/j.jadohealth.2011.05.013},
journal = {Journal of Adolescent Health },
volume = {50},
number = {2},
pages = {154--163},
}