@article{ref1,
title="An economical and proved helicopter program for transporting the emergency critically ill and injured patient in Maryland",
journal="Journal of trauma",
year="1973",
author="Cowley, R. Adams and Hudson, F. and Scanlan, E. and Gill, W. and Lally, R. J. and Long, W. and Kuhn, A. O.",
volume="13",
number="12",
pages="1029-1038",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}