@article{ref1,
title="Secondary joint injuries after accidents",
journal="Deutsche Gesundheitswesen",
year="1970",
author="Seyfarth, H.",
volume="25",
number="12",
pages="536-541",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-0219",
doi="",
url="http://dx.doi.org/"
}