Background Children and adolescents who play rugby are at increased risk of concussion and its effects. Competitive rugby union and rugby league feature as major sports in the school sport curriculum ...
Correspondence to Professor Urho M Kujala, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä 40014, Finland; Urho.M.Kujala{at}jyu.fi There are discrepant findings between (A) ...
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