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'The NFL effect:' Damar Hamlin's on-field collapse sparks national push for CPR training

Buffalo Bills safety Damar Hamlin partnered with the American Heart Association for Red Heart Awareness Day last week to show ...

What is atrial fibrillation and how is it treated?

Atrial fibrillation, or A-fib, is becoming more common, but doctors say treatments are improving. The condition is a ...