Genetic and environmental contributions to common psychopathologies of childhood and adolescence: a study of twins and their siblings.
Ehringer MA, Rhee SH, Young S, Corley R, Hewitt JK. Genetic and environmental contributions to common psychopathologies of childhood and adolescence: a study of twins and their siblings. J Abnorm Child Psychol. 2006 Feb; 34(1):1-17.