@article{ref1,
title="Pneumomediastinum following a wrestling grip during play",
journal="Ugeskrift for Laeger",
year="1981",
author="Johnsen, T. and Bødker, A and Friis, M.",
volume="143",
number="42",
pages="2744-2745",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}