@article{ref1,
title="Can pre-existing conditions lead to diagnostic errors?",
journal="Hefte zur Unfallheilkunde",
year="1975",
author="Greinemann, H.",
volume="",
number="121",
pages="283-286",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}