@article{ref1,
title="Declared and undeclared substance use among emergency department patients: a population-based study",
journal="Addiction",
year="2006",
author="Smith, Gordon C. S. and Jia, Haomiao and Putnam, Sandra L. and Rockett, Ian Richard Hildreth",
volume="101",
number="5",
pages="706-712",
abstract="Adjustment for under-reporting produced minimal change in the estimated prevalence of alcohol use. However, toxicological screening markedly increased estimates of other drug use, especially for the elderly, who may under-report medication use. Screening tests are useful tools for detecting undeclared substance use.<p /><p>Language: en</p>",
language="en",
issn="0965-2140",
doi="10.1111/j.1360-0443.2006.01397.x",
url="http://dx.doi.org/10.1111/j.1360-0443.2006.01397.x"
}