title: Attention deficit disorder in three pairs of monozygotic twins: a case report.
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000235:genetics*; D002648:Child; D002649:Child Abuse; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D014427:Twins; D014430:Twins, Monozygotic