@article{ref1,
title="Ambulance services. Cowboys and engines",
journal="Health service journal",
year="1992",
author="Millar, B.",
volume="102",
number="5313",
pages="27-29",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0952-2271",
doi="",
url="http://dx.doi.org/"
}