Quick Facts: Down Syndrome (Trisomy 21) - Merck Manuals Consumer

Down Syndrome (Trisomy 21) - Learn about the causes, symptoms, diagnosis & treatment from the Merck Manuals - Medical Consumer Version.
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About Down Syndrome National Down Syndrome Society (NDSS)

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About Down Syndrome National Down Syndrome Society (NDSS)

Down syndrome (Trisomy 21): Video, Anatomy & Definition

Down Syndrome (Trisomy 21) - Stepwards

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Down syndrome - Wikipedia

Down syndrome: MedlinePlus Genetics

Down Syndrome (Trisomy 21) - Children's Health Issues - Merck Manuals Consumer Version

Down Syndrome: Practice Essentials, Background, Pathophysiology

About Down Syndrome National Down Syndrome Society (NDSS)

Facts about Down Syndrome

Down syndrome: MedlinePlus Genetics

What is Down Syndrome?

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