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| | Medical References: Down Syndrome (Site not responding. Last check: 2007-10-31) |
 | | Down syndrome is a disorder that includes a combination of birth defects; among them, some degree of mental retardation, characteristic facial features and, often, heart defects, increased infections, problems with vision and hearing, and other health problems. |
 | | Down syndrome is one of the most common genetic birth defects, affecting approximately one in 800 to 1,000 babies. |
 | | The risk of Down syndrome increases with age, from about 1 in 1,250 for a woman at age 25, to 1 in 1,000 at age 30, 1 in 400 at age 35, and 1 in 100 at age 40. |
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