title: [48,XXYY syndrome in a 2-year-old boy].
authors: E
authors: E
authors: Kinge
authors: M B
authors: MB
authors: Petersen
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007713:Klinefelter Syndrome / Q000175:diagnosis* / Q000235:genetics; D008297:Male
vernacular_title: 48,XXYY syndrom hos en to år gammel gutt.