RT Article T1 Sources of nonmedically used prescription stimulants: Differences in onset, recency and severity of misuse in a population-based study JF Drug and alcohol dependence VO 145 SP 106 OP 112 A1 Chen, Lian-Yu A1 Mojtabai, Ramin A1 Storr, Carla L. A1 Crum, Rosa M. A1 Strain, Eric C. A2 Mojtabai, Ramin A2 Storr, Carla L. A2 Crum, Rosa M. A2 Strain, Eric C. LA English YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1912708647 DO 10.1016/j.drugalcdep.2014.09.781