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American Association for Klinefelter Syndrome Information and Support (AAKSIS )
Web site of non-profit organization which provides information on Klinefelter Syndrome (KS). This sex chromosome abnormality affecting male conceptions causes a chromosomal arrangement referred to as 47,XXY or, more commonly, just XXY. Site includes list of regional support groups, medical and educational resources, and links to other KS Web sites.
http://www.AAKSIS.org/

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