@article{ref1,
title="Poisoning by drugs",
journal="Deutsches Zentralblatt für Krankenpflege",
year="1967",
author="Helwig, H.",
volume="11",
number="2",
pages="65-67",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0417-3678",
doi="",
url="http://dx.doi.org/"
}