@article{ref1,
title="Traumatic brain injury as a risk factor for Alzheimer's disease",
journal="Journal of neurology, neurosurgery, and psychiatry",
year="2004",
author="Jellinger, K. A.",
volume="75",
number="3",
pages="511-512",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3050",
doi="",
url="http://dx.doi.org/"
}