@article{ref1,
title="Need for categorization of exposure in studies of cellular telephone users",
journal="Epidemiology",
year="1999",
author="Lundquist, M.",
volume="10",
number="3",
pages="347-347",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1044-3983",
doi="",
url="http://dx.doi.org/"
}