@article{ref1,
title="Present HEW policies in primary prevention",
journal="Preventive medicine",
year="1977",
author="Cooper, T.",
volume="6",
number="2",
pages="198-208",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0091-7435",
doi="",
url="http://dx.doi.org/"
}