@article{ref1,
title="A survey of drug use among impaired drivers in Virginia",
journal="Medico-legal bulletin",
year="1980",
author="Valentour, J. C. and McGee, M. P. and Edwards, R. P. and Goza, S. W.",
volume="29",
number="5",
pages="1-7",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0025-8164",
doi="",
url="http://dx.doi.org/"
}