@article{ref1,
title="Dietary supplements in the US: pitfalls and safety",
journal="Nature clinical practice. Gastroenterology and hepatology",
year="2006",
author="Hilsden, Robert J. and Walker, Robin",
volume="3",
number="2",
pages="60-61",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1743-4378",
doi="10.1038/ncpgasthep0414",
url="http://dx.doi.org/10.1038/ncpgasthep0414"
}