@article{ref1,
title="Letter: Fitness to drive",
journal="British medical journal: BMJ",
year="1976",
author="Ball, M. J.",
volume="1",
number="6022",
pages="1404-1404",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}