@article{ref1,
title="Walking and mortality in older men",
journal="New England journal of medicine",
year="1998",
author="Batty, D.",
volume="338",
number="22",
pages="1622-1623",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}