@article{ref1,
title="Factors to consider when using hair as a cocaine-exposure measure for mothers or newborns",
journal="NIDA research monograph",
year="1996",
author="Marques, P. R.",
volume="166",
number="",
pages="183-197",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1046-9516",
doi="",
url="http://dx.doi.org/"
}