@article{ref1,
title="Weighted regression analyses found incorrect",
journal="American journal of public health",
year="1985",
author="Markush, R. E.",
volume="75",
number="4",
pages="413-413",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}