@article{ref1,
title="Regional trauma systems",
journal="British medical journal: BMJ",
year="1997",
author="Yates, D.",
volume="315",
number="7119",
pages="1321-1322",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}