Sex chromatin survey in mentally handicapped children in Mexico.
D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000235:genetics; D008297:Male; D008800:Mexico; D012728:Sex Chromatin; D012729:Sex Chromosome Aberrations / Q000453:epidemiology*; D014424:Turner Syndrome / Q000235:genetics