40,000 high school football kids get a concussion every year, but contrary to equipment manufacturers' claims, the specific brand of helmet and helmet age were not associated with lower risk of concussion, say researchers.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/u...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/u...