@article{ref1,
title="Safer sex--do new therapies promote risk taking?",
journal="Fortschritte der Medizin",
year="1998",
author="Zippel, S.",
volume="116",
number="3",
pages="11-12",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0015-8178",
doi="",
url="http://dx.doi.org/"
}