@article{ref1,
title="The relationship of developmental narrowing of the cervical spinal canal to reversible and irreversible injury of the cervical spinal cord in football players. An epidemiological study",
journal="Journal of bone and joint surgery: American volume",
year="1998",
author="Summerfield, S. L.",
volume="80",
number="10",
pages="1554-1555",
abstract="<p>[Abstract unavailable]  Keywords: American football; </p> <p>Language: en</p>",
language="en",
issn="0021-9355",
doi="",
url="http://dx.doi.org/"
}