Bills safety Damar Hamlin returns to action in first regular-season game since cardiac arrest
Damar Hamlin Plays First Game for Bills Since Cardiac Arrest Incident
Damar Hamlin cleared to play, 4 months after cardiac arrest
After player's cardiac arrest, NFL releases its emergency medical procedures
How NFL Player Damar Hamlin Tackled the Odds: Health Experts Weigh In
Bills safety Damar Hamlin returns to action in first regular-season game since cardiac arrest
Full coverage: Bills' Damar Hamlin suffers cardiac arrest vs. Bengals - Los Angeles Times
Damar Hamlin: Buffalo Bills issue update after star collapsed during NFL clash - Mirror Online
Bills' Hamlin collapses on field after cardiac arrest, in critical condition