Williams Syndrome - Williams Syndrome is a rare neurodevelopmental disorder caused by a deletion of about 26 genes from the long arm of chromosome 7.
https://en.wikipedia.org/wiki/Williams_syndrome
Williams Syndrome Association - The WSA is a resource for people and families living with Williams syndrome as well as doctors, researchers and educators.
https://williams-syndrome.org/
Williams syndrome: MedlinePlus - Williams syndrome is a rare genetic disorder that can lead to problems with development.
https://medlineplus.gov/