@article{ref1,
title="The efficacy of ground versus helicopter transport in patient outcome",
journal="Journal - Oklahoma State Medical Association",
year="1989",
author="Campbell, J. P. and Low, R. B. and Bowman, D.",
volume="82",
number="7",
pages="311-314",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0030-1876",
doi="",
url="http://dx.doi.org/"
}