@article{ref1,
title="A question too complex for statistical modeling",
journal="American journal of public health",
year="2011",
author="Levine, Beverly J.",
volume="101",
number="5",
pages="773-773",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="10.2105/AJPH.2010.300117",
url="http://dx.doi.org/10.2105/AJPH.2010.300117"
}