@article{ref1,
title="Head injuries, with special emphasis on traffic accidents",
journal="Kangogaku zasshi",
year="1969",
author="Hirai, Hiroshi",
volume="33",
number="5",
pages="37-41",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="0386-9830",
doi="",
url="http://dx.doi.org/"
}