We found a matchYour institution may have access to this item. Find your institution then sign in to continue.Title48,XXYY, 48,XXXY and 49,XXXXY syndromes: not just variants of Klinefelter syndrome.AuthorsTartaglia, Nicole; Ayari, Natalie; Howell, Susan; D'Epagnier, Cheryl; Zeitler, PhilipPublicationActa Paediatrica, 2011, Vol 100, Issue 6, p851ISSN0803-5253Publication typearticleDOI10.1111/j.1651-2227.2011.02235.x