title: The XXX syndrome frequency among mental defectives and fertility.
mesh_terms: D002875:Chromosomes; D041321:Chromosomes, Human, X; D005298:Fertility / Q000235:genetics*; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D012729:Sex Chromosome Aberrations; D058533:Sex Chromosome Disorders of Sex Development; D014314:Trisomy
keywords: CHROMOSOMES; FERTILITY/genetics; MENTAL DEFICIENCY/genetics