@article{ref1,
title="Urinary excretion of delta aminolevulinic acid after discontinuance of therapy for lead poisoning. A test for adequacy of therapy",
journal="Journal of pediatrics",
year="1972",
author="Vitale, L. F. and Fine, B. P. and Barth, A. and Filkin, K.",
volume="81",
number="5",
pages="977-979",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3476",
doi="",
url="http://dx.doi.org/"
}