@article{ref1,
title="Harvard Study of Accidents and Aged",
journal="Geriatrics",
year="1963",
author="Alvarez, W. C.",
volume="18",
number="4",
pages="257-257",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0016-867X",
doi="",
url="http://dx.doi.org/"
}