When did WWE Stop chair shots to the head?

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Tags

1. #management
2. #impact
3. #folding
4. #program
5. #opponent
6. #regarding
7. #instituted
8. #wellness
9. #concussion
10. #strike
11. #specifically
12. #amended
13. #originally
14. #chairs
15. #props
16. #january
17. #talent
18. #eliminating