1. Patterns of concurrent substance use among adolescent nonmedical ADHD stimulant users Chen, Lian-Yu; Crum, Rosa M.; Strain, Eric C.; Martins, Silvia S.; Mojtabai, Ramin 2015 Articles Substance abuseSubstance abuse--EpidemiologyTeenagers--Drug useDrug abuseDrug abuse--EpidemiologyYouth--Drug use