@article{ref1,
title="Guide for the prevention of tetanus after injury",
journal="Revista Paulista de Medicina",
year="1972",
author="",
volume="80",
number="5",
pages="255-256",
abstract="<p>[Abstract unavailable]</p><p>Language: pt</p>",
language="pt",
issn="0035-0362",
doi="",
url="http://dx.doi.org/"
}