@article{ref1,
title="Off the mark",
journal="AeroSafety world",
year="2012",
author="Werfelman, Linda",
volume="7",
number="",
pages="39-43",
abstract="A common method of identifying pilots at risk of cardiovascular problems missed about half those who soon experienced trouble.<p />",
language="",
issn="1934-4015",
doi="",
url="http://dx.doi.org/"
}