@article{ref1,
title="Causes and percentages of accidents and their relation to brain injuries",
journal="Neurocirugia (Santiago)",
year="1969",
author="Valladares, H.",
volume="27",
number="1",
pages="82-89",
abstract="Abstract unavailable.",
language="",
issn="0047-9411",
doi="",
url="http://dx.doi.org/"
}