@article{ref1,
title="Approaches to prevention in an HMO setting",
journal="Journal of family practice",
year="1979",
author="Thompson, R. S.",
volume="9",
number="1",
pages="71-82",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0094-3509",
doi="",
url="http://dx.doi.org/"
}