XYY constitution in prepubertal child.
D000374:Aggression; D001827:Body Height; D002648:Child; D002653:Child Behavior Disorders / Q000235:genetics*; D004569:Electroencephalography; D005824:Genetics, Behavioral; D006801:Humans; D007621:Karyotyping; D008297:Male; D011627:Puberty; D012729:Sex Chromosome Aberrations