Here's what Damar Hamlin's cardiac workup might look like - ABC News
Damar Hamlin Showing Signs of Improvement After Collapse During NFL Game - WSJ
Bills safety Damar Hamlin returns to action in first regular-season game since cardiac arrest - WTOP News
Who is Damar Hamlin, the Buffalo Bills player who collapsed at Monday's game? : NPR
Examining football's health risks after Damar Hamlin's cardiac arrest on the field
Sports world sends messages of support to Damar Hamlin following on-field cardiac arrest, Sports
Why was AED, CPR use to treat Damar Hamlin's cardiac arrest?
What happened to Damar Hamlin?
Damar Hamlin's injury shines a spotlight on Sudden Cardiac Arrest — more people want to learn about CPR and AEDs
Full coverage: Bills' Damar Hamlin suffers cardiac arrest vs. Bengals - Los Angeles Times