Radioulnar synostosis, behavioral disturbance, and XYY chromosomes.

Aggression Body Height Child Child Behavior Disorders/complications Child, Preschool Criminal Psychology Cytogenetics Dermatoglyphics Elbow/diagnostic imaging Humans Intellectual Disability/complications,genetics Karyotyping Leukocytes/cytology Male Radiography Radius Sex Chromosome Aberrations/complications Synostosis/complications,diagnostic imaging Ulna