Mulligan, Richard C., et al. “Attention-Deficit/Hyperactivity/Disorder,/Autistic/Traits,/and/Substance/Use/in/Missouri/Adolescents”. Scandinavian Journal of Child and Adolescent Psychiatry and Psychology, vol. 2, no. 2, July 2014, pp. 86-92, https://tidsskrift.dk/sjcapp/article/view/16674.