Comorbidity of Bipolar Disorder (BPD) and ADHD in Children and Adolescents : Studies Outside the United States, Methodological Issues Inflating Comorbidity, Role of Behavioural Sensitization, and Concept of Temper Dysregulation Disorder With Dysphoria Proposed by DSM-5 Work Group | Sivakumar, T. | 2012 | Journal of Attention Disorders: A Journal of Theoretical and Applied Science