@article{ref1,
title="Are rule changes the low-hanging fruit for concussion prevention in youth sport?",
journal="JAMA pediatrics",
year="2019",
author="Emery, Carolyn A. and Black, Amanda M.",
volume="173",
number="4",
pages="309-310",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="2168-6211",
doi="10.1001/jamapediatrics.2018.5498",
url="http://dx.doi.org/10.1001/jamapediatrics.2018.5498"
}