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Searching for similar diagnosis through DNA

New York Times, December 28, 2007
With technology that can now scan each of an individual's 46 chromosomes for minute aberrations, doctors are providing thousands of children lumped together as "autistic" or "developmentally delayed" with distinct genetic diagnoses. The symptoms, they are finding, can be traced to one of dozens of deletions or duplications of DNA that were previously hard or impossible to detect.