What happened to Damar Hamlin? Explaining Commotio Cordis
Damar Hamlin's collapse is the latest in history of medical emergencies in sports - ABC News
Damar Hamlin Injury and Commotio Cordis explained
Bills-Bengals Game Suspended After Damar Hamlin Collapses on Field
Hamlin's path back to playing football intersects with his hometown in Pittsburgh on Saturday
Damar Hamlin cardiac arrest: Everything you need to know about collapse of Bills player.
Damar Hamlin's Cardiac Arrest: What We Know and Don't Know - The New York Times
EXPLAINER: What happened to Damar Hamlin?
Cardiac arrest causes: What led to Buffalo Bills' Damar Hamlin's collapse?