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PO Box 270064
West Allis, WI 53227
The Tetrasomy/Pentasomy X Support Group provides information on rare chromosomal disorders in which females are born with extra X chromosomes. Presenting signs and symptoms may include, among other things, skeletal abnormalities and mental retardation. The group provides networking, advocacy, support, and patient education, as well as information for health professionals and other professionals, such as teachers.
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