@article{ref1,
title="Natural Histological History of Untreated Anterior Cruciate Ligament Tears",
journal="Journal of sports traumatology and related research",
year="1991",
author="Denti, M and Berardi, A and Perego, P",
volume="13",
number="2",
pages="111-120",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="1120-3137",
doi="",
url="http://dx.doi.org/"
}