@article{ref1,
title="Intervening in communities: challenges for public health",
journal="Journal of epidemiology and community health",
year="2004",
author="Roberts, H.",
volume="58",
number="9",
pages="729-730",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0143-005X",
doi="10.1136/jech.2004.020347",
url="http://dx.doi.org/10.1136/jech.2004.020347"
}