No, mid-game collapse of Bills' Damar Hamlin wasn't caused by
WAMC Sports Report: Damar Hamlin asked who won Bills-Bengals
Damar Hamlin updates: Bills safety asked in writing if team won game
Damar Hamlin updates: What we know about Bills' safety's condition
How an NFL hit like Damar Hamlin's can stop a heart - Gothamist
Damar Hamlin cleared to play, 4 months after cardiac arrest
Damar Hamlin cherished starting for the Buffalo Bills : NPR
Damar Hamlin fundraiser gets more than $3 million in donations
Buffalo Bills' Hamlin Collapses On Field, Gets CPR; Game Suspended
After NFL player Damar Hamlin collapse, Texas student athlete
Bills safety Damar Hamlin in critical condition after collapse
NFL playoffs: Saturday night thriller gets action started
Damar Hamlin updates: What we know about Bills' safety's condition
Over $4m donated to Damar Hamlin's toy drive after cardiac arrest