@article{ref1,
title="Old age",
journal="Public health",
year="1959",
author="GILLET, J. A.",
volume="73",
number="",
pages="416-418",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0033-3506",
doi="",
url="http://dx.doi.org/"
}