@article{ref1,
title="Drug levels: therapeutic and toxic serum/plasma concentrations of common drugs",
journal="Journal of clinical monitoring and computing",
year="1999",
author="Regenthal, R. and Krueger, M. and Koeppel, C. and Preiss, R.",
volume="15",
number="7-8",
pages="529-544",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1387-1307",
doi="",
url="http://dx.doi.org/"
}