@article{ref1,
title="Guidelines for brain concussion in sports--how are they to be applied in boxing?",
journal="Lakartidningen",
year="2007",
author="Zetterberg, Henrik and Hietala, Max Albert and Wallin, Anders and Blennow, Kaj",
volume="104",
number="22",
pages="1715; author reply 1715-6",
abstract="<p>[Abstract unavailable]</p><p>Language: sv</p>",
language="sv",
issn="0023-7205",
doi="",
url="http://dx.doi.org/"
}