Damar Hamlin 'fully cleared' to resume playing, general manager says
Bills' Damar Hamlin's cardiac arrest adds to NFL injury reality
Doctors explain why Buffalo Bills safety Damar Hamlin collapsed as support pours in from fans, players - CBS New York
Covering the possible causes and diagnoses of Damar Hamlin's injury - Poynter
A Somber NFL Searches for Normalcy After Damar Hamlin's Collapse - WSJ
Bills safety Damar Hamlin in critical condition after suffering cardiac arrest
NFL star Damar Hamlin's family thanks fans for support after his collapse - BBC News
How the Bills and Bengals led the way in the hour after Hamlin collapsed - ESPN
Why did Damar Hamlin collapse?