Damar Hamlin cleared to play, 4 months after cardiac arrest – The Denver Post
Who is Damar Hamlin, the Buffalo Bills player who collapsed at Monday's game? : NPR
Buffalo Bills player Damar Hamlin in critical condition after cardiac arrest on the field - CBS News
What is commotio cordis, which NFL player Damar Hamlin says stopped his heart?
Bills safety Damar Hamlin preparing for first preseason game since going into cardiac arrest - On3
Bills' Damar Hamlin takes next step in recovery by practicing fully 6 months since cardiac arrest, Newsletter
Damar Hamlin updates: What we know about Bills' safety's condition
When Damar Hamlin collapsed, the NFL deployed its emergency action plan - The Washington Post
Bills' remarkably improved Damar Hamlin asks: 'Did we win?' - Los Angeles Times
Buffalo Bills' Damar Hamlin Suffers Cardiac Arrest During Monday Night Football - CNET
Buffalo Bills' Damar Hamlin 'Suffered Cardiac Arrest' Playing Bengals