Derek Boogaard: Hockey enforcer had brain disease from head hits
Derek Boogaard, a former National Hockey League player, had a degenerative brain disease linked to repeated head trauma when he died in May at the age of 28 ...Derek Boogaard: Hockey enforcer had brain disease from head hits
Derek Boogaard, a former National Hockey League player, had a degenerative brain disease linked to repeated head trauma when he died in May at the age of 28 ...Derek Boogaard: Hockey enforcer had brain disease from head hits
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