@article{ref1,
title="The ultimate sacrifice",
journal="Science",
year="2012",
author="Gibbons, A.",
volume="336",
number="6083",
pages="834-837",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.336.6083.834",
url="http://dx.doi.org/10.1126/science.336.6083.834"
}