High loading of polygenic risk for ADHD in children with comorbid aggression. - Hamshere ML; Langley K; Martin J; Agha SS; Stergiakouli E; Anney RJ; Buitelaar J; Faraone SV; Lesch KP; Neale BM; Franke B; Sonuga-Barke E; et al. (The American journal of psychiatry, 2013)