@article{ref1,
title="Biochemical sequelae to severe head and face trauma",
journal="British journal of oral surgery",
year="1971",
author="Higgins, G.",
volume="9",
number="21",
pages="79-81",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-117X",
doi="",
url="http://dx.doi.org/"
}