@article{ref1,
title="A medical early warning system",
journal="CMAJ : Canadian Medical Association journal",
year="2002",
author="Kassirer, Jerome P.",
volume="166",
number="9",
pages="1151-1152",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0820-3946",
doi="",
url="http://dx.doi.org/"
}