@article{ref1,
title="Sickle cell trait, exertion-related death and confounded estimates",
journal="British journal of sports medicine",
year="2014",
author="Stovitz, Steven D. and Shrier, Ian",
volume="48",
number="4",
pages="285-286",
abstract="<p>[Abstract unavailable]  KW: American Football; Soccer</p> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2012-091619",
url="http://dx.doi.org/10.1136/bjsports-2012-091619"
}