@article{ref1,
title="Acute toxicity of folic acid in pregnant women",
journal="Teratology",
year="1999",
author="Czeizel, Andrew E. and Tomcsik, M.",
volume="60",
number="1",
pages="3-4",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0040-3709",
doi="10.1002/(SICI)1096-9926(199907)60:1<3::AID-TERA2>3.0.CO;2-4",
url="http://dx.doi.org/10.1002/(SICI)1096-9926(199907)60:1<3::AID-TERA2>3.0.CO;2-4"
}