A timeline of the NFL's response after Damar Hamlin collapsed
Damar Hamlin collapse sparks discussion of risks in NFL
Ohio high schools, colleges have emergency plans similar to one
Damar Hamlin emergency hits home with athletic trainers
Bills' Hamlin in critical condition after collapse on field
Even Damar Hamlin's collapse can't make us quit our football
Damar Hamlin released from hospital one week after on-field
Workplace Emergency Preparedness: Damar Hamlin's Sudden Collapse
When Damar Hamlin collapsed, the NFL deployed its emergency action
Bills, Bengals game suspended: Damar Hamlin collapses on field