What is commotio cordis? It could have caused Damar Hamlin to collapse : NPR
Damar Hamlin is “making steady progress” and “appears to be neurologic
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COVID-19 vaccines didn't cause Damar Hamlin's cardiac arrest - Los Angeles Times
NFL Player has Cardiac Arrest During Primetime Game
Cardiac arrest causes: What led to Buffalo Bills' Damar Hamlin's collapse?
Shocking scene as Bills player Damar Hamlin suffers cardiac arrest at NFL game
NFL's Damar Hamlin injury: Buffalo Bills release official cause of Damar Hamlin's life-threatening collapse