@article{ref1,
title="Epidemiology: use and utility in the process",
journal="Fundamental and applied toxicology",
year="1984",
author="Leviton, A.",
volume="4",
number="3 Pt 2",
pages="S357-66",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0272-0590",
doi="",
url="http://dx.doi.org/"
}