@article{ref1,
title="Ethnicity and epidemiological research: not so black and white",
journal="Journal of epidemiology and community health",
year="2004",
author="Tam, CC and Lee, Shawna J. and Rodrigues, Laura Cunha",
volume="58",
number="6",
pages="528-9; aut",
abstract="<p>Letter<br><br>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0143-005X",
doi="",
url="http://dx.doi.org/"
}