@article{ref1,
title="When is cocaine the cause of death?",
journal="American journal of forensic medicine and pathology",
year="1991",
author="Karch, Steven B. and Stephens, B. S.",
volume="12",
number="1",
pages="1-2",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0195-7910",
doi="",
url="http://dx.doi.org/"
}