@article{ref1,
title="Knox and caine respond [6]",
journal="American journal of public health",
year="2006",
author="Knox, K.L. and Caine, E.D.",
volume="96",
number="7",
pages="1149-1150",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="10.2105/AJPH.2006.088641",
url="http://dx.doi.org/10.2105/AJPH.2006.088641"
}