@article{ref1,
title="Physical activity and older people: a walk a day keeps the doctor away",
journal="Journal of the American Geriatrics Society",
year="1996",
author="Ettinger, W. H. Jr",
volume="44",
number="2",
pages="207-208",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8614",
doi="",
url="http://dx.doi.org/"
}