@article{ref1,
title="Helicopter service in Denmark with special reference to accidental hypothermia",
journal="Ugeskrift for Laeger",
year="1972",
author="Jessen, K. and Hagelsten, J. O.",
volume="134",
number="34",
pages="1775-1780",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}