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. (July 2016) - Sivakumar, T.