RT Article T1 Perceived risk of regular cannabis use in the United States from 2002 to 2012: Differences by sex, age, and race/ethnicity JF Drug and alcohol dependence VO 149 SP 232 OP 244 A1 Pacek, Lauren R. A2 Martins, Silvia S. A2 Mauro, Pia M. LA English YR 2015 UL https://krimdok.uni-tuebingen.de/Record/191264908X DO 10.1016/j.drugalcdep.2015.02.009