title: Sources of error in fragile-X determination.
mesh_terms: D002869:Chromosome Aberrations; D005260:Female; D008040:Genetic Linkage; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D012730:Sex Chromosomes / Q000648:ultrastructure*; D014960:X Chromosome / Q000648:ultrastructure*