@article{ref1,
title="The world's elderly: another aspect",
journal="Quintessence international",
year="2001",
author="Wathen, W. F.",
volume="32",
number="2",
pages="93-93",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-6572",
doi="",
url="http://dx.doi.org/"
}