@article{ref1,
title="Bioterrorism. Blocking smallpox: a second defense",
journal="Science",
year="2001",
author="Cohen, John",
volume="294",
number="5542",
pages="500-500",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.294.5542.500",
url="http://dx.doi.org/10.1126/science.294.5542.500"
}