@article{ref1,
title="Advanced age toxicology",
journal="Przeglad Lekarski",
year="2002",
author="Groszek, Barbara",
volume="59",
number="4-5",
pages="204-206",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0033-2240",
doi="",
url="http://dx.doi.org/"
}