What is commotio cordis, which NFL player Damar Hamlin says

Buffalo Bills safety Damar Hamlin says commotio cordis caused his "Monday Night Football" collapse. Here's an explanation of the rare, heart-stopping condition.

Bengals Player Tee Higgins, Who Damar Hamlin Tackled, Speaks Out

Commotio cordis - Wikipedia

Workplace News American Heart Association

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No Evidence COVID-19 Vaccine Caused Bronny James' Cardiac Arrest

Will Damar Hamlin play football again? Here's what his doctors

Will Damar Hamlin play football again? Here's what his doctors

Commotio cordis injuries

Bills safety Damar Hamlin eases back into practice 5 months since near-death experience