@article{ref1,
title="The sleep apnea syndrome in professional drivers",
journal="Anales de Medicina Interna",
year="1997",
author="Zamarrón Sanz, C.",
volume="14",
number="11",
pages="545-546",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0212-7199",
doi="",
url="http://dx.doi.org/"
}