1. Patterns of concurrent substance use among nonmedical ADHD stimulant users: Results from the National Survey on Drug Use and Health Chen, Lian-Yu; Crum, Rosa M.; Martins, Silvia S.; Kaufmann, Christopher N.; Strain, Eric C.; Mojtabai, Ramin 2014 Articles EpidemiologyAttention-deficit hyperactivity disorder--TreatmentMedication abuseSubstance abuseSubstance abuse--Epidemiology