Bills' Hamlin in Critical Condition After Collapse on Field - Bloomberg
Buffalo safety Damar Hamlin collapses during game vs. Bengals, is in critical condition, NFL says; game postponed indefinitely
What Is Cardiac Arrest? What to Know About Why Damar Hamlin Collapsed - WSJ
Damar Hamlin set to appear in first regular season game since cardiac arrest
Damar Hamlin's family clarifies number of times Bills safety was resuscitated
Damar Hamlin Returns To Field In Bills' First Preseason Game
Buffalo Bills safety Damar Hamlin collapses on field, gets CPR
Audio: Damar Hamlin Emergency Response Captured on Recordings - The New York Times
Cardiac arrest causes: What led to Buffalo Bills' Damar Hamlin's collapse?