@article{ref1,
title="Motorists vs. cyclists",
journal="New England journal of medicine",
year="1972",
author="Siegal, E. J. and Kleinman, Paul K.",
volume="286",
number="6",
pages="324-324",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}