NHL has unique off-ice concussion foe
You might be surprised to learn what one doctor says has been one of the most interesting hurdles in his research in dealing with head injuries.
A player's passport.
Football and hockey face a serious battle when it comes to head injuries, but the NHL has an added wrinkle the NFL doesn't have to worry about: the communication barrier. Take a league that had 879 players from 25 countries in 2009-10, and communicating what ails you or understanding what a doctor ...
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