@article{ref1,
title="A 1 percent risk",
journal="Lancet",
year="1968",
author="Williams, L. N.",
volume="1",
number="7549",
pages="973-973",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0140-6736",
doi="",
url="http://dx.doi.org/"
}