@article{ref1,
title="Sports and recreational injury: the hidden cost of a healthy lifestyle",
journal="Injury prevention",
year="2003",
author="Guskiewicz, Kevin M. and Marshall, Stephen W.",
volume="9",
number="2",
pages="100-102",
abstract="Abstract unavailable.",
language="en",
issn="1353-8047",
doi="",
url="http://dx.doi.org/"
}