@article{ref1,
title="Perspectives on the changing treatment protocols of concussions in youth sports",
journal="MD advisor",
year="2018",
author="Williams, Catherine E. and Puro, Janet S. and Armstrong, Paul W.",
volume="11",
number="3",
pages="5-9",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1937-0660",
doi="",
url="http://dx.doi.org/"
}