@article{ref1,
title="It is time to give concussion an operational definition: a 3-step process to diagnose (or rule out) concussion within 48 h of injury: World Rugby guideline",
journal="British journal of sports medicine",
year="2016",
author="Raftery, Martin and Kemp, Simon and Patricios, Jon and Makdissi, Michael and Decq, Philippe",
volume="50",
number="11",
pages="642-643",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2016-095959",
url="http://dx.doi.org/10.1136/bjsports-2016-095959"
}