@article{ref1,
title="Should children take part in motocross competitions?",
journal="Anales de Pediatria",
year="2008",
author="Rodriguez Nunez, A. and Igeño Cano, J. C. and Dosil Gallardo, S. and Rivas Pumar, P. and Martinon Torres, F.",
volume="69",
number="3",
pages="279-281",
abstract="<p>[Abstract unavailable]</p> <p>Language: es</p>",
language="es",
issn="1695-4033",
doi="",
url="http://dx.doi.org/"
}