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[Part Three of “Punched Out: The Life and Death of a Hockey Enforcer.”]

It did not take long for Dr. Ann McKee to see the telltale brown spots near the outer surface of Boogaard’s brain — the road signs of C.T.E. She did not know much about Boogaard other than that he was a 28-year-old hockey player. And the damage was obvious.

“Derek Boogaard: A Brain ‘Going Bad’.” — John Branch, New York Times

See Part One here. And Part Two here.