@article{ref1,
title="Head injuries in South Africa",
journal="South African journal of surgery",
year="1984",
author="De Villiers, J. C.",
volume="22",
number="1",
pages="51-56",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0038-2361",
doi="",
url="http://dx.doi.org/"
}