Damar Hamlin, cardiac arrest and what it takes to boost the odds of survival : NPR
Damar Hamlin: Buffalo Bills safety showing 'remarkable improvement,' doctors say
A timeline of the NFL's response after Damar Hamlin collapsed
Fans, NFL respond after Bills' Hamlin collapses on field
Buffalo Bills' Damar Hamlin in critical condition after collapse on field
If NFL truly cares about players, only course of action is to cancel game in wake of Damar Hamlin injury
Bills safety Damar Hamlin in critical condition after collapsing - The Japan Times
Damar Hamlin's collapse showed the need for CPR skills. Here's where to get them
Damar Hamlin timeline from injury to return to Bills
Damar Hamlin is cleared to play football, 4 months after his on-field cardiac arrest
NFL player in critical condition after collapsing on field during primetime game
Bills' Hamlin in critical condition after collapse on field
NFL star Damar Hamlin's family thanks fans for support after his collapse - BBC News