![](https://time100.time.com/wp-content/uploads/sites/16/2013/03/2013_t100_poll_cantu.jpg?w=350&h=350&crop=1)
Neurosurgeon, co-director of Boston University’s Center for the Study of Traumatic Encephalopathy and a leading expert on concussions
Voting for inclusion in the TIME 100 issue is now closed. The final list, selected by our editors, will be revealed on Thursday, April 18th