@article{ref1,
title="Physicians' warnings for unfit drivers and risk of road crashes",
journal="New England journal of medicine",
year="2013",
author="Redelmeier, Donald A. and Yarnell, Christopher J. and Tibshirani, Robert J.",
volume="368",
number="1",
pages="87-88",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-4793",
doi="10.1056/NEJMc1212928",
url="http://dx.doi.org/10.1056/NEJMc1212928"
}