@article{ref1,
title="Injuries in professional ballet dancing",
journal="Zeitschrift fur Orthopadie und Ihre Grenzgebiete",
year="2000",
author="Drees, P.",
volume="138",
number="3",
pages="Oa2, Oa4-6",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-3220",
doi="",
url="http://dx.doi.org/"
}