NFL player Damar Hamlin in critical condition after suffering cardiac arrest
NFL: Damar Hamlin cleared to play again after cardiac arrest, American Football News
Damar Hamlin is cleared to play football, 4 months after his on-field cardiac arrest – WABE
Bills' Damar Hamlin OK to play after suffering cardiac arrest - ESPN
Bills safety Hamlin back in Buffalo to resume recovery - WHYY
Bills safety Damar Hamlin released from Cincinnati hospital, returns to Buffalo
Damar Hamlin is released from Cincinnati hospital, returns to Buffalo : NPR
Bills' Hamlin breathing on his own, joins team via video
Damar Hamlin in critical condition after suffering cardiac arrest; Bills-Bengals postponed - ESPN
Former NFL trainer on Bills' on-field treatment of safety Damar Hamlin: 'Phenomenal'
A timeline of the NFL's response after Damar Hamlin collapsed
Damar Hamlin's collapse gave NFL no choice but to suspend big game