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Multiple concussions linked to long-term brain damage

Dec. 3: Dr. Ann McKee released the world's largest study of Chronic Traumatic Encephalopathy, or CTE, based on research done at the Department of Veteran Affairs. The new study demonstrates the strongest connection yet between routine blows to the head and severe brain damage. NBC's Rehema Ellis reports.  (Nightly News)Dr. Ann McKee released the world's largest study of Chronic Traumatic Encephalopathy, or CTE, based on research done at the Department of Veteran Affairs. The new study demonstrates the strongest connection yet between routine blows to the head and severe brain damage. NBC's Rehema Ellis reports. (Nightly News)




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