@article{ref1,
title="Traumatic hemothorax and pneumothorax",
journal="Torax",
year="1971",
author="Alvariza, C. A. and Camaño, C.",
volume="20",
number="3",
pages="159-162",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0049-4143",
doi="",
url="http://dx.doi.org/"
}