@article{ref1,
title="Heroin use by motorists in Sweden confirmed by analysis of 6-acetylmorphine in urine",
journal="Journal of analytical toxicology",
year="2001",
author="Jones, Alan Wayne",
volume="25",
number="5",
pages="353-355",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0146-4760",
doi="",
url="http://dx.doi.org/"
}