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Lions' banged up roster takes another hit as Amon-Ra St. Brown suffers concussion, ruled outOctober 23, 2022 -
Doctor who discovered CTE says Tua should retire after suffering 'permanent brain damage'October 4, 2022 -
NFL Says Concussions Down 29 Percent In Regular SeasonJanuary 25, 2019 -
NFL Drops Appeal Over Dementia Claims In Concussion CaseJanuary 9, 2019