What happened to NFL player Damar Hamlin, who collapsed on the field after suffering cardiac arrest
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What happened to Damar Hamlin?
What Is Cardiac Arrest? What to Know About Why Damar Hamlin Collapsed - WSJ
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NFL: Buffalo Bills safety Damar Hamlin in 'critical condition' after collapsing on field, needing emergency aid
Damar Hamlin's family thanks fans, doctors as Bills safety remains in critical condition
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Report: Damar Hamlin to be paid in full after cardiac arrest
Explainer: What happened to Damar Hamlin?