@article{ref1,
title="The swallowed needle",
journal="Zahnarzt, Der",
year="1973",
author="Ambros, W. O.",
volume="17",
number="5",
pages="211-217",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-1678",
doi="",
url="http://dx.doi.org/"
}