AdvertisementEvidence Mounts Linking Head Hits To Permanent Brain InjuryDecember 03, 2012Helen ThompsonfacebookEmailDr. Ann McKee, professor of neurology and pathology of Boston University School of Medicine and co-director of the Veterans Affairs Center for the Study of Traumatic Encephalopathy, inspects a brain in the Bedford Veteran Medical Center last year. (Boston Globe via Getty Images)