@article{ref1,
title="Relative risk",
journal="Pediatrics",
year="1985",
author="Sheps, S.",
volume="75",
number="6",
pages="1169-1170",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-4005",
doi="",
url="http://dx.doi.org/"
}