"This is a very important topic, and the more research, the better. But, right now, we've in the very early stages, and this is very preliminary," said Galetta.
Results of the study were published March 6 in the journal PLOS One.
Learn more about head injuries, sports and what you can do to prevent head injuries from the American Association of Neurological Surgeons.
Copyright © 2012 HealthDay. All rights reserved.