Bok
02-21-2013, 08:21 PM
This common brain injury can cause serious — and lasting — damage
More... (http://www.sciencenews.org/view/generic/id/348428/title/FOR_KIDS_Concussion_More_than_getting_your_bell_rung)
More... (http://www.sciencenews.org/view/generic/id/348428/title/FOR_KIDS_Concussion_More_than_getting_your_bell_rung)