Friendly to the Extreme: Meet Kids and Adults With Williams Syndrome

Williams Syndrome is a rare genetic condition -- so rare, in fact, that few people have ever heard of it. Of about 7,500 newborns, only one will have it. But that one, should you ever meet him or her, will likely have a personality of unforgettable ebullience and warmth. It is the type of personality seen only occasionally beyond the world of Williams Syndrome. When 20/20's Chris Cuomo attended a camp for children with Williams he was besieged by hugs and slaps on the back. Then came the...Full Story
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