@article{ref1,
title="Problems in estimating disability",
journal="Minnesota medicine",
year="1965",
author="Kennedy, R. H.",
volume="48",
number="",
pages="245-248",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-556X",
doi="",
url="http://dx.doi.org/"
}