What is Down syndrome Wikipedia?

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Tags

1. #disorder
2. #third
3. #disability
4. #chromosome
5. #trisomy
6. #growth
7. #genetic
8. #syndrome
9. #known
10. #delays
11. #moderate
12. #associated
13. #features
14. #typically
15. #facial
16. #intellectual
17. #physical
18. #characteristic
19. #presence
20. #caused