?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=RJ&rft.au=Echemendia%2C+RJ&rft.aulast=Echemendia&rft.issn=1473-0480&rft.date=25+May+2017&rft.pages=870-871&rft.volume=51&rft.title=British+Journal+of+Sports+Medicine&rft.atitle=The+Concussion+Recognition+Tool+5th+Edition+(CRT5)&rft.genre=article