@article{ref1,
title="Motorcyclists' pneumomediastinum",
journal="New England journal of medicine",
year="1982",
author="Nath, K. A. and Rich, E. C. and Drage, C.",
volume="307",
number="8",
pages="502-502",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}