- American Association for Klinefelter Syndrome Information and Support (AAKSIS) is dedicated to bringing you accurate and current information about Klinefelter Syndrome and is a network for individuals, families, and anyone interesting in learning more about Klinefelter Syndrome. Klinefelter Syndrome, 47XXY, the most common of the sex chromosome variations, is said to occur in 1 out of 500 males. Statistics suggest that there are thousands of 47XXY individuals in the United States alone. Many remain undiagnosed.
- Kleinfelter Syndrome from the Mayo Clinic. Klinefelter syndrome is a genetic condition that results when a boy is born with an extra copy of the X chromosome. Klinefelter syndrome is a common genetic condition affecting males.
- What is Klinefelter syndrome? a service of the U.S. National Library of Medicine®
- What are common symptoms of Klinefelter syndrome (KS)? a Guide for XXY males and their families from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH).
- Klinefelter's Syndrome – also called: XXY male from MedlinePlus, the U.S. National Library of Medicine (NLM), U.S. Department of Health and Human Services (HHS), National Institutes of Health (NIH).
Cynthia A. Lockley
The Web Diva for the Accessible Techcomm website since 2012. Fellow of the Society for Technical Communication. STC member since June 1979. A founder and former webmaster for the STC Special Needs Committee, which became the STC AccessAbility SIG (2001-2011).