NFL: Damar Hamlin in critical condition after collapse on field, American Football News
When Damar Hamlin collapsed, the NFL deployed its emergency action plan - The Washington Post
Damar Hamlin at Bills facility for first time since discharge - The Japan Times
NFL player Damar Hamlin in critical condition after suffering cardiac arrest
Bills' Hamlin in critical condition after suffering cardiac arrest during game against Bengals
Bills' Damar Hamlin released from hospital, returns home
What Happened to Damar Hamlin? What We Know After Bills Player Collapses, Suffers Cardiac Arrest On Field – NBC Chicago
Damar Hamlin's collapse highlights importance of bystanders learning CPR - ABC News
Shocking scene as Bills player Damar Hamlin suffers cardiac arrest at NFL game