What the N.F.L. Says, and What It Doesn't, About Injuries - The New York Times
As Damar Hamlin Stays in Hospital, N.F.L. Won't Resume Suspended Game This Week - The New York Times
NFL Commissioner Highlights Safety Record In Letter To Fans
Injuries to key NFL players are piling up, making depth even more important, Sports
Transcript: End-of-Season Health & Safety Briefing, Feb. 7, 2022
Suit: NFL runs 'sham' disability program for injured players
NFL struggling to convince enough players to get vaccinated - The Boston Globe
Health issues in American football - Wikipedia
Pro football's troubled history of on-field medical emergencies