The Colorado Longitudinal Twin Study of Reading Difficulties and ADHD: Etiologies of Comorbidity and Stability.
Wadsworth SJ, DeFries JC, Willcutt EG, Pennington BF, Olson RK. The Colorado Longitudinal Twin Study of Reading Difficulties and ADHD: Etiologies of Comorbidity and Stability. Twin Res Hum Genet. 2015 Dec; 18(6):755-61.