@article{ref1,
title="Screening: completeness of population registers a problem for some sub-groups",
journal="Journal of public health medicine",
year="1999",
author="Lowry, R. J. and Harvey, J.",
volume="21",
number="3",
pages="360-361",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0957-4832",
doi="",
url="http://dx.doi.org/"
}