X-linked mental retardation.
D000293:Adolescent; D001315:Australia; D002648:Child; D002674:Child, Institutionalized; D005260:Female; D005808:Genes, Recessive; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology / Q000235:genetics*; D007361:Intelligence Tests; D008297:Male; D010375:Pedigree; D012730:Sex Chromosomes; D012744:Sex Ratio