Genetics / Attention-Deficit/Hyperactivity Disorder / Ireland / Molecular Psychiatry / Biological Sciences / Humans / Female / Male / Animal Model / Odds ratio / Nuclear Family / Linkage Disequilibrium / Chi Square Distribution / Genetic Association / Genetic Markers / The American / Humans / Female / Male / Animal Model / Odds ratio / Nuclear Family / Linkage Disequilibrium / Chi Square Distribution / Genetic Association / Genetic Markers / The American