@article{ref1,
title="Role of cannabis in motor vehicle crashes",
journal="Epidemiologic reviews",
year="1999",
author="Bates, M. N. and Blakely, Tony A.",
volume="21",
number="2",
pages="222-232",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0193-936X",
doi="",
url="http://dx.doi.org/"
}