Damar Hamlin's Cardiac Arrest: What We Know and Don't Know - The New York Times
What may have caused Buffalo Bills' Damar Hamlin to go into cardiac arrest? A local cardiologist explains
What is commotio cordis? It could have caused Damar Hamlin to collapse : NPR
Damar Hamlin and Other Athletes With Heart Problems
After Damar Hamlin shock, NFL balances emotions, tight schedule
Why Did Damar Hamlin Collapse? Doctors Say Tackle Can Stop Heart
Pittsburgh native Damar Hamlin in critical condition after collapse on field
With heavy hearts, NFL players go back to work - The Japan Times
Bills' Damar Hamlin suffered cardiac arrest vs. Bengals. Here is what happened
Buffalo Bills' Damar Hamlin in critical condition after suffering cardiac arrest on field - CBS News
Why Damar Hamlin's Heart May Have Stopped
NJ football: Damar Hamlin injury is a 'worst nightmare'
Buffalo Bills star Damar Hamlin's on-field collapse puts spotlight on cardiac arrest in young people - Good Morning America
Buffalo Bills safety Damar Hamlin in critical condition after collapse on field
Bills' Damar Hamlin remains in critical condition after cardiac arrest