@article{ref1,
title="Three variations of unstructured case review as methods of determining "preventable deaths" after trauma",
journal="Journal of trauma",
year="1993",
author="Burney, R. E. and Maio, R. F.",
volume="34",
number="6",
pages="914-915",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-5282",
doi="",
url="http://dx.doi.org/"
}