Read the NFL's full statement after Damar Hamlin's collapse during Bills-Bengals game
NFL approves playoff changes after Bills-Bengals cancellation; neutral-site AFC Championship Game possible - The Athletic
N.F.L. Cancels Bills-Bengals Game - The New York Times
Buffalo Bills return to work after Damar Hamlin suffered cardiac arrest on the field, News
How Damar Hamlin can change NFL post-career policies
The Reaction to Damar Hamlin's Collapse Represents Progress
Prayers, charitable support roll in for Bills' Damar Hamlin
EXPLAINER: What Bills-Bengals cancellation does to playoffs
NFL: Bills-Bengals game won't resume
Fans, NFL respond after Bills' Hamlin collapses on field
Bills' Hamlin in critical condition after collapse on field