@article{ref1,
title="Lead levels and children's psychologic performance",
journal="New England journal of medicine",
year="1979",
author="Cole, J. F.",
volume="301",
number="3",
pages="161-162",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}