How long do clinical trials take?

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Tags

1. #factors
2. #complete
3. #licensing
4. #before
5. #length
6. #typical
7. #approved
8. #stage
9. #trials
10. #licensed
11. #phases
12. #years
13. #takes
14. #varies
15. #tested
16. #clinical
17. #affect
18. #there
19. #might