Thirty-five males with double Y chromosome.
D000987:Antisocial Personality Disorder / Q000150:complications; D001827:Body Height; D002574:Cervical Vertebrae / Q000002:abnormalities; D002653:Child Behavior Disorders; D003718:Denmark; D004569:Electroencephalography; D006801:Humans; D007361:Intelligence Tests; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000453:epidemiology; D008159:Lumbar Vertebrae / Q000002:abnormalities; D008297:Male; D001523:Mental Disorders / Q000150:complications; D009030:Mosaicism; D010555:Personality Inventory; D012727:Sex Characteristics; D012729:Sex Chromosome Aberrations / Q000150:complications / Q000453:epidemiology*; D012920:Social Behavior Disorders; D013091:Spermatogenesis; D013737:Testis / Q000002:abnormalities; D013904:Thoracic Vertebrae / Q000002:abnormalities