title: Clinical findings and phenotype in a toddler with 48,XXYY syndrome.
authors.forename: Osman
authors.initials: O
authors.lastname: Demirhan
mesh_terms: D041321:Chromosomes, Human, X; D041322:Chromosomes, Human, Y; D002658:Developmental Disabilities / Q000235:genetics*; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008607:Intellectual Disability / Q000175:diagnosis / Q000235:genetics; D008297:Male; D010641:Phenotype; D012729:Sex Chromosome Aberrations; D013577:Syndrome