@article{ref1,
title="Morbid conditions at death in old men",
journal="Journal of chronic diseases",
year="1969",
author="Lake, B.",
volume="21",
number="11",
pages="761-779",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9681",
doi="",
url="http://dx.doi.org/"
}