@article{ref1,
title="The slippery-slope argument",
journal="Journal of clinical ethics",
year="1992",
author="van der Burg, W.",
volume="3",
number="4",
pages="256-268",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1046-7890",
doi="",
url="http://dx.doi.org/"
}