what the evidence shows thus far in terms of the effect of the hits on the brain and have some subcon cusssive hits in the absence of a concussion diagnose been linked? >> absolutely. sub con "s or just exposure to repetitive impacts that is usually measured in exposure years to the sport, the length of a playing career of the football player or hockey player, that has been significantly associated with long-term cognitive impairment, april pa thee and depression, not cte, because those are living individuals. we've seen it in our brain autopsy series where the longer a football player plays, the higher the risk for cte. we know in high school athletes, if you follow them for a single season in football, hockey and soccer, in the absence of a con kks, you will see mri evidence of brain diagnose at the end of that season, not related to concussion because none of them had a concussion, that's the sub injury stained by those amateur high school athletes in a single season showing up as brain damage on mri and also some neuro psych exams. >> you said because on the players were living, that it's