Those statistics for the long-term effects do not exist yet because those studies have not been completed. There are studies starting, but I don't have the names of them in front of me right now.
We do know that if you strike people in the head, whether it be in a bar fight or in a ring, whether it be sanctioned or unsanctioned, no matter how hard you try to protect ahead of time, there will be potential injuries. Sometimes there are very serious injuries—