@article{ref1,
title="How safe are air ambulances?",
journal="Medical economics",
year="1982",
author="Bleiler, E.",
volume="59",
number="19",
pages="142-142",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-7206",
doi="",
url="http://dx.doi.org/"
}