@article{ref1,
title="Prospective randomized studies",
journal="Knee surgery, sports traumatology, arthroscopy",
year="2001",
author="Eriksson, E.",
volume="9",
number="1",
pages="1-1",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0942-2056",
doi="",
url="http://dx.doi.org/"
}