@article{ref1,
title="Recommendations for defining and classifying anterior cruciate ligament injuries in epidemiologic studies",
journal="Journal of athletic training",
year="2010",
author="Marshall, Stephen W.",
volume="45",
number="5",
pages="516-518",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1062-6050",
doi="10.4085/1062-6050-45.5.516",
url="http://dx.doi.org/10.4085/1062-6050-45.5.516"
}