@article{ref1,
title="Sildenafil overdose in a female patient",
journal="Journal of toxicology - clinical toxicology",
year="2001",
author="Hung, D. Z. and Yang, D. Y.",
volume="39",
number="4",
pages="423-424",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0731-3810",
doi="",
url="http://dx.doi.org/"
}