@article{ref1,
title="Letter: Blood-lead levels, behaviour, and intelligence",
journal="Lancet",
year="1974",
author="Bryce-Smith, D. and Waldron, H. A.",
volume="2",
number="7871",
pages="44-45",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}