@article{ref1,
title="Recurrent injury in elite football",
journal="Clinical journal of sport medicine",
year="2007",
author="Verhagen, E. A. L. M.",
volume="17",
number="6",
pages="514-515",
abstract="<p>[Abstract unavailable]  Keywords: Soccer</p> <p>Language: en</p>",
language="en",
issn="1050-642X",
doi="10.1097/01.jsm.0000299223.29279.80",
url="http://dx.doi.org/10.1097/01.jsm.0000299223.29279.80"
}