@article{ref1,
title="Circus animals: desertion?",
journal="British journal of sports medicine",
year="1998",
author="MacAuley, D.",
volume="32",
number="4",
pages="273-274",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0306-3674",
doi="",
url="http://dx.doi.org/"
}