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  1. 6 things to expect with Down syndrome babies | Pediatrics | Your ...

  2. Down Syndrome | Birth Defects | CDC - Centers for Disease …

  3. Living with Down Syndrome | Birth Defects | CDC - Centers for …

  4. Down syndrome - Symptoms and causes - Mayo Clinic

  5. Down Syndrome (Trisomy 21) in Children

  6. Trisomy 21 (Down Syndrome) - Children's Hospital of Philadelphia

  7. About Down Syndrome | National Down Syndrome Society (NDSS)

  8. Down syndrome - Diagnosis and treatment - Mayo Clinic

  9. Down Syndrome (for Parents) | Nemours KidsHealth

  10. National Association for Down Syndrome | Facts About Down Syndrome