The 2015 U.S. Soccer Federation header ban and its effect on emergency room concussion rates in soccer players aged 10-13
The aim was to assess the change in proportion of children aged 10-13 playing soccer in the US presenting to an Emergency Department (ED) with a concussion in relation to any other injury before
and after the ban.
1 Applies to shipping within Germany. Information about shipping policies for other countries can be found here: Payment and Delivery Information 2 including tax