@article{ref1,
title="Letter: Blood-lead levels, behaviour and intelligence",
journal="Lancet",
year="1975",
author="Needleman, H. L. and Epstein, S. and Carnow, B. and Scanlon, J. and Parkinson, D. and Samuels, S. and Mazzochi, A. and David, O.",
volume="1",
number="7909",
pages="751-752",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}