Uncle: Hamlin needed his heart restarted twice after cardiac arrest during NFL game
Bills safety Damar Hamlin remains in critical condition after cardiac arrest on field - ABC News
Damar Hamlin: Buffalo Bills player in critical condition but showing 'signs of improvement' as support offered to Tee Higgins, NFL News
What Is Commotio Cordis? Damar Hamlin's Cardiac Arrest, Explained
Damar Hamlin's Cardiac Arrest: What We Know and Don't Know - The New York Times
Bills safety Damar Hamlin released from Buffalo hospital
NFL player Damar Hamlin in critical condition after suffering cardiac arrest
Buffalo Bills player Damar Hamlin in critical condition after cardiac arrest on the field - CBS News
Buffalo Bills release update on Damar Hamlin after NFL player suffers cardiac arrest - Eurosport
Bills safety Damar Hamlin in critical condition after collapse during game