@article{ref1,
title="Effect of environment on the health status of pregnant women",
journal="Przeglad Lekarski",
year="1987",
author="Zawadzki, J. and Was, K. and Wolak, J.",
volume="44",
number="5",
pages="466-468",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0033-2240",
doi="",
url="http://dx.doi.org/"
}