@article{ref1,
title="Spinal injuries and BMX bicycles",
journal="British medical journal (clinical research edition)",
year="1987",
author="Johnson, S. R. and Fairclough, J. A.",
volume="294",
number="6582",
pages="1259-1260",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0267-0623",
doi="",
url="http://dx.doi.org/"
}